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Compare fractions same denominator

Learning goals

  • Compares fractions with the same denominator by comparing numerators.
  • Explains that equal-sized parts make the numerator determine the larger fraction.
  • Uses <, >, and = to record fraction comparisons.
  • Uses fraction models or a number line to compare fractions with the same denominator.

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Compare fractions same denominator 1
A bar is divided into \(6\) equal parts. Some parts are shaded. What fraction is shaded? What fraction is unshaded? Compare the two fractions.
Figure for problem 540140

Hints

- Count the shaded parts and all the equal parts. - Count the unshaded parts. - Compare the numerators because the denominators are the same.

Solution

1. Three of the \(6\) equal parts are shaded, so the shaded fraction is \(\frac{3}{6}\). 2. The other \(3\) parts are unshaded, so the unshaded fraction is \(\frac{3}{6}\). 3. The fractions are equal: \(\frac{3}{6}=\frac{3}{6}\).

Answer

Shaded: \(\frac{3}{6}\) Unshaded: \(\frac{3}{6}\) \(\frac{3}{6}=\frac{3}{6}\)
Compare fractions same denominator 2
Order these fractions from least to greatest: \(\frac{5}{8},\ \frac{1}{8},\ \frac{7}{8}\)

Hints

- The denominator is \(8\) in every fraction. - Compare the numerators \(1\), \(5\), and \(7\). - Put the smallest numerator first.

Solution

1. All three fractions have denominator \(8\), so compare their numerators. 2. Since \(1<5<7\), the fractions are ordered \(\frac{1}{8}<\frac{5}{8}<\frac{7}{8}\).

Answer

\(\frac{1}{8}<\frac{5}{8}<\frac{7}{8}\)
Compare fractions same denominator 3
Which bar has the greater shaded fraction? Write both shaded fractions.
Figure for problem 558527

Hints

- Do both bars use equal-size parts? - Count shaded parts in each bar. - With equal-size parts, which bar has more shaded?

Solution

1. Both bars are divided into \(4\) equal parts. 2. Bar a) has \(1\) part shaded, or \(\frac{1}{4}\). 3. Bar b) has \(3\) parts shaded, or \(\frac{3}{4}\). 4. Three fourths is greater than one fourth.

Answer

Bar b) is greater: a) \(\frac{1}{4}\); b) \(\frac{3}{4}\).
Compare fractions same denominator 4
Name the fractions at A and B. Which fraction is greater? Explain using the steps on the number line.
Figure for problem 558528

Hints

- Start by counting the equal spaces from \(0\) to \(1\). - Count spaces from \(0\) to each letter. - Why does a point farther right represent a greater fraction?

Solution

1. A is \(2\) sixth-size steps from \(0\), so A is \(\frac{2}{6}\). 2. B is \(5\) steps from \(0\), so B is \(\frac{5}{6}\). 3. B is farther right, and \(\frac{5}{6}>\frac{2}{6}\).

Answer

A is \(\frac{2}{6}\); B is \(\frac{5}{6}\). \(\frac{5}{6}>\frac{2}{6}\), because B is more sixth-size steps from \(0\).
Compare fractions same denominator 5
Consider the fractions \(\frac{4}{6}\), \(\frac{6}{6}\), and \(\frac{7}{6}\). Label each fraction “less than \(1\),” “equal to \(1\),” or “greater than \(1\).” Then write the fractions from least to greatest.

Hints

- First name one whole using sixths. - Compare each numerator with the denominator. - Use the comparisons with \(1\) to determine the order.

Solution

1. One whole is \(\frac{6}{6}\). 2. Since \(4<6\), \(\frac{4}{6}\) is less than \(1\). 3. \(\frac{6}{6}\) is equal to \(1\), and since \(7>6\), \(\frac{7}{6}\) is greater than \(1\). 4. Their order is \(\frac{4}{6}<\frac{6}{6}<\frac{7}{6}\).

Answer

Less than \(1\): \(\frac{4}{6}\) Equal to \(1\): \(\frac{6}{6}\) Greater than \(1\): \(\frac{7}{6}\) \(\frac{4}{6}<\frac{6}{6}<\frac{7}{6}\)
Compare fractions same denominator 6
List every fraction with denominator \(8\) that is greater than \(\frac{3}{8}\) and less than \(\frac{6}{8}\).

Hints

- Keep the denominator \(8\) in every fraction. - Find whole numbers greater than \(3\) and less than \(6\). - Use those numbers as the numerators.

Solution

1. With denominator \(8\), compare the numerators because every part has the same size. 2. The numerator must be greater than \(3\) and less than \(6\). 3. The whole-number numerators that fit are \(4\) and \(5\). 4. The fractions are \(\frac{4}{8}\) and \(\frac{5}{8}\).

Answer

\(\frac{4}{8}\) and \(\frac{5}{8}\)
Compare fractions same denominator 7
Use the two same-size badges. Which badge has the greater unshaded fraction? Write and compare the unshaded fractions.
Figure for problem 540116

Hints

- Count all equal parts and shaded parts in each badge. - Use the parts that are not shaded to write each unshaded fraction. - With the same denominator, compare the numerators.

Solution

1. Badge a) has \(2\) of \(6\) parts shaded, so \(4\) of \(6\) parts are unshaded: \(\frac{4}{6}\). 2. Badge b) has \(5\) of \(6\) parts shaded, so \(1\) of \(6\) parts is unshaded: \(\frac{1}{6}\). 3. The denominators are the same, so compare the numerators. 4. Since \(4>1\), \(\frac{4}{6}>\frac{1}{6}\), and badge a) has the greater unshaded fraction.

Answer

Badge a): \(\frac{4}{6}>\frac{1}{6}\).
Compare fractions same denominator 8
Two same-size snack trays each have \(8\) equal spaces. One tray has \(5\) spaces filled, and the other has \(2\) spaces filled. Which filled fraction is greater? Write a comparison.

Hints

- Both trays are divided into \(8\) equal spaces. - Write the filled part of each tray as a fraction. - With equal denominators, the greater numerator names the greater fraction.

Solution

1. The filled fractions are \(\frac{5}{8}\) and \(\frac{2}{8}\). 2. The denominators are the same, so compare the numerators. 3. Since \(5>2\), \(\frac{5}{8}>\frac{2}{8}\).

Answer

\(\frac{5}{8}>\frac{2}{8}\)
Compare fractions same denominator 9
Two same-size bars are each divided into \(8\) equal parts. Each bar has \(4\) parts shaded, but the shaded parts are in different positions. Compare the shaded fractions with \(<\), \(>\), or \(=\). Explain.
Figure for problem 540134

Hints

- Count the equal parts and shaded parts in each bar. - The shaded pieces can be in different places and still have the same total size. - Use \(=\) when the shaded amounts are equal.

Solution

1. Each bar has the same denominator, \(8\), so its parts are the same size. 2. Each bar also has the same numerator, \(4\). 3. The placement of the shaded parts does not change their total amount. 4. Therefore, \(\frac{4}{8}=\frac{4}{8}\).

Answer

\(\frac{4}{8}=\frac{4}{8}\)
Compare fractions same denominator 10
Ava walks \(\frac{6}{4}\) mile on one trail. Ben walks \(\frac{3}{4}\) mile on another trail. Who walks farther? Write a fraction comparison.

Hints

- Both fractions have denominator \(4\). - Compare the number of fourths in each distance. - The greater numerator names the greater distance.

Solution

1. Both distances are measured in fourths of a mile. 2. Compare the numerators \(6\) and \(3\). 3. Since \(6>3\), \(\frac{6}{4}>\frac{3}{4}\). 4. Ava walks farther.

Answer

Ava walks farther. \(\frac{6}{4}>\frac{3}{4}\).
Compare fractions same denominator 11
Miles orders these fractions from least to greatest: \(\frac{10}{8},\ \frac{7}{8},\ \frac{9}{8}\) Find the error and write the correct order.

Hints

- Identify what stays the same in all three fractions. - Think of each numerator as a count of same-size pieces. - Compare each fraction with one whole, \(\frac{8}{8}\).

Solution

1. All three fractions count eighth-size parts. 2. Their numerators are \(10\), \(7\), and \(9\). 3. Ordering the numerators gives \(7<9<10\). 4. Therefore, \(\frac{7}{8}<\frac{9}{8}<\frac{10}{8}\).

Answer

Miles did not order the numerators. The correct order is \(\frac{7}{8}<\frac{9}{8}<\frac{10}{8}\).
Compare fractions same denominator 12
A recipe uses \(\frac{5}{8}\) cup of oats and \(\frac{7}{8}\) cup of fruit. Which amount is greater, and by how many eighths?

Hints

- Both fractions have denominator \(8\). - Compare the numerators. - Subtract the smaller numerator from the larger numerator to find the difference in eighths.

Solution

1. Both amounts are measured in eighths of a cup. 2. Since \(7>5\), \(\frac{7}{8}>\frac{5}{8}\). 3. The difference is \(7-5=2\) eighths.

Answer

The fruit amount is greater: \(\frac{7}{8}>\frac{5}{8}\). It is greater by \(2\) eighths.
Compare fractions same denominator 13
One container is \(\frac{2}{8}\) full, and another same-size container is \(\frac{6}{8}\) full. Which container is fuller, and by how many eighths?

Hints

- Both containers are divided into eighths. - Compare the numerators. - Subtract the smaller numerator from the larger numerator.

Solution

1. Both fractions have denominator \(8\), so compare the numerators. 2. Since \(6>2\), \(\frac{6}{8}>\frac{2}{8}\). 3. The difference is \(6-2=4\) eighths.

Answer

The second container is fuller: \(\frac{6}{8}>\frac{2}{8}\). It is fuller by \(4\) eighths.
Compare fractions same denominator 14
Order these fractions from least to greatest: \(\frac{7}{4},\ \frac{5}{4},\ \frac{6}{4}\)

Hints

- The denominator is \(4\) in every fraction. - Compare the numerators \(5\), \(6\), and \(7\). - Put the smallest numerator first.

Solution

1. All three fractions have denominator \(4\), so compare their numerators. 2. Since \(5<6<7\), the order is \(\frac{5}{4}<\frac{6}{4}<\frac{7}{4}\).

Answer

\(\frac{5}{4}<\frac{6}{4}<\frac{7}{4}\)
Compare fractions same denominator 15
Point \(F\) is one sixth-size space to the left of \(1\). Write the fraction at point \(F\) and compare it with \(\frac{2}{6}\).

Hints

- Write \(1\) as sixths. - Move left by one sixth-size space. - Compare the numerators because both fractions have denominator \(6\).

Solution

1. One whole is \(\frac{6}{6}\). 2. One sixth-size space left of \(\frac{6}{6}\) is \(\frac{5}{6}\). 3. Since \(5>2\), \(\frac{5}{6}>\frac{2}{6}\).

Answer

\(F=\frac{5}{6}\), and \(\frac{5}{6}>\frac{2}{6}\).
Compare fractions same denominator 16
Fraction A is \(\frac{7}{8}\). Fraction B has the same denominator and is one eighth-size part greater. Find fraction B and compare it with A and with \(1\).

Hints

- Add one eighth while keeping the denominator \(8\). - Compare the new numerator with the old numerator. - A fraction equals one whole when its numerator equals its denominator.

Solution

1. One eighth greater than \(\frac{7}{8}\) is \(\frac{8}{8}\). 2. Fraction B is \(\frac{8}{8}\). 3. Since \(8>7\), \(\frac{8}{8}>\frac{7}{8}\). 4. Also, \(\frac{8}{8}=1\).

Answer

Fraction B is \(\frac{8}{8}\). Thus, \(\frac{7}{8}<\frac{8}{8}=1\).
Compare fractions same denominator 17
Which circle has the larger shaded fraction? Explain whether shaded pieces must touch to be counted together.
Figure for problem 558529

Hints

- Count all equal parts in each circle. - Count shaded parts even when they do not touch. - Does moving shaded pieces change how many are shaded?

Solution

1. Each circle is divided into \(6\) equal parts. 2. Circle a) has \(2\) parts shaded, or \(\frac{2}{6}\). 3. Circle b) has \(4\) parts shaded, or \(\frac{4}{6}\). 4. The positions of shaded pieces do not change the fraction; \(\frac{4}{6}>\frac{2}{6}\).

Answer

Circle b) has more shaded: \(\frac{4}{6}>\frac{2}{6}\). Shaded pieces do not need to touch; their total count still matters.
Compare fractions same denominator 18
Sam says, “\(\frac{2}{6}\) must be greater than \(\frac{4}{6}\) because fewer pieces means bigger pieces.” What is wrong with Sam's idea?

Hints

- Look at the bottom number in each fraction. - Do the two fractions use different-sized pieces? - Which fraction takes more of the same-sized pieces?

Solution

1. Both fractions use sixths of the same-sized whole, so all the pieces have equal size. 2. Two sixths means taking \(2\) pieces; four sixths means taking \(4\) of those same-sized pieces. 3. Four sixths is greater, so \(\frac{2}{6}<\frac{4}{6}\).

Answer

The pieces are the same size in both fractions. Taking \(4\) sixths gives more than taking \(2\) sixths.
Compare fractions same denominator 19
Two same-size trays are each divided into \(6\) equal spaces. Tray A has \(3\) spaces filled. Tray B has the same number of empty spaces as Tray A has filled spaces. Compare the filled fractions of the two trays.

Hints

- Find both the filled and empty counts for Tray A. - Use the stated relationship to determine Tray B's empty count. - Convert Tray B's empty count into a filled count before comparing.

Solution

1. Tray A has \(3\) filled spaces and \(6-3=3\) empty spaces. 2. Tray B has \(3\) empty spaces, so it also has \(6-3=3\) filled spaces. 3. Both filled fractions are \(\frac{3}{6}\). 4. Therefore, the filled fractions are equal.

Answer

\(\frac{3}{6}=\frac{3}{6}\)
Compare fractions same denominator 20
Compare \(\frac{7}{8}\) and \(\frac{9}{8}\). Which fraction is closer to \(1\), or are they equally close? Also write the correct comparison symbol.

Hints

- One whole is \(\frac{8}{8}\). - Count how many eighth-size spaces each fraction is from \(\frac{8}{8}\). - Then compare the numerators to order the fractions.

Solution

1. One whole is \(\frac{8}{8}\). 2. Seven eighths is one eighth below one, and nine eighths is one eighth above one. 3. The fractions are equally close to one. 4. Since \(7<9\), \(\frac{7}{8}<\frac{9}{8}\).

Answer

They are equally close to \(1\), and \(\frac{7}{8}<\frac{9}{8}\).
Compare fractions same denominator 21
Compare \(\frac{5}{6}\) and \(\frac{8}{6}\). Which fraction is closer to \(1\)?

Hints

- One whole is \(\frac{6}{6}\). - Count how many sixth-size spaces each fraction is from \(\frac{6}{6}\). - Then compare the numerators to order the fractions.

Solution

1. One whole is \(\frac{6}{6}\). 2. Five sixths is \(1\) sixth below one, while eight sixths is \(2\) sixths above one. 3. Therefore, \(\frac{5}{6}\) is closer to \(1\). 4. Since \(5<8\), \(\frac{5}{6}<\frac{8}{6}\).

Answer

\(\frac{5}{6}<\frac{8}{6}\), and \(\frac{5}{6}\) is closer to \(1\).
Compare fractions same denominator 22
Nia and Omar each have a same-size paper strip divided into \(8\) equal sections. On Monday, Nia colors \(2\) sections and Omar colors \(4\). By Friday, Nia has colored \(5\) sections and Omar \(6\). a) Write each fraction colored on Friday. Which is greater? b) Who colored more eighths during the week?

Hints

- Keep the same whole strip for each person's fraction. - Compare how many of the same-sized sections are colored at the end. - For the second question, look at the change from Monday to Friday, not the final total.

Solution

1. On Friday, Nia has colored \(\frac{5}{8}\) and Omar \(\frac{6}{8}\). 2. The sections are equal in size, so \(\frac{6}{8}>\frac{5}{8}\). Omar has the greater shaded fraction on Friday. 3. Nia colored \(5-2=3\) eighths during the week. Omar colored \(6-4=2\) eighths. 4. Nia colored more during the week, even though Omar has more colored in all.

Answer

a) Nia: \(\frac{5}{8}\); Omar: \(\frac{6}{8}\). Omar's is greater. b) Nia colored more: \(\frac{3}{8}\), compared with Omar's \(\frac{2}{8}\).
Compare fractions same denominator 23
A light bar has \(8\) equal sections. It starts with \(5\) sections lit. Then \(2\) more sections light up, and after that \(1\) lit section turns off. Write the fraction lit at each stage. Order the three fractions from least to greatest.

Hints

- Keep the denominator fixed because the bar still has eight sections. - Update only the number of lit sections at each change. - Order the resulting fractions by their numerators.

Solution

1. The starting fraction is \(\frac{5}{8}\). 2. After \(2\) more sections light up, the fraction is \(\frac{7}{8}\). 3. After \(1\) section turns off, the fraction is \(\frac{6}{8}\). 4. Since \(5<6<7\), \(\frac{5}{8}<\frac{6}{8}<\frac{7}{8}\).

Answer

The stages are \(\frac{5}{8}\), \(\frac{7}{8}\), and \(\frac{6}{8}\). From least to greatest: \(\frac{5}{8}<\frac{6}{8}<\frac{7}{8}\).
Compare fractions same denominator 24
Eight voting cards are arranged in \(2\) identical groups. Each group has \(3\) “yes” cards and \(1\) “no” card. What fraction of all cards say “yes”? Compare that fraction with \(\frac{1}{2}\) and with \(1\).

Hints

- Count the “yes” cards in both groups. - Put that count over the \(8\) cards in all. - Write one half and one whole as eighths before comparing.

Solution

1. Two groups contain \(3+3=6\) yes cards. 2. There are \(8\) cards in all, so the yes fraction is \(\frac{6}{8}\). 3. One half is \(\frac{4}{8}\), and one whole is \(\frac{8}{8}\). 4. Therefore, \(\frac{1}{2}<\frac{6}{8}<1\).

Answer

The yes fraction is \(\frac{6}{8}\), and \(\frac{1}{2}<\frac{6}{8}<1\).
Compare fractions same denominator 25
Ella colors half of the white sections in the bar. What fraction of the whole bar is colored now? Compare it with the fraction colored before Ella began.
Figure for problem 540195

Hints

- Read both the colored and white sections from the bar. - Work with only the white sections when finding how many Ella adds. - Compare the number of colored sections before and after, keeping the whole bar unchanged.

Solution

1. The bar has \(8\) equal sections. Initially \(4\) are blue, so \(\frac{4}{8}\) is colored. 2. Four sections are white. Half of these is \(2\) sections. 3. After Ella colors those sections, \(4+2=6\) of the \(8\) sections are colored. 4. The new fraction is \(\frac{6}{8}\), greater than \(\frac{4}{8}\).

Answer

\(\frac{6}{8}\) is colored now, which is greater than the original \(\frac{4}{8}\).
Compare fractions same denominator 26
Two same-size strips each have \(6\) equal sections. Strip A has \(2\) sections shaded. Strip B has as many unshaded sections as strip A has shaded sections. What fraction of strip B is shaded? Compare the two shaded fractions.

Hints

- Compare the equal-sized sections in the two whole strips. - Start with the sections that are not shaded in B. - Which strip has more of these same-sized sections shaded?

Solution

1. Strip A has \(2\) shaded sixths, so its shaded fraction is \(\frac{2}{6}\). 2. Strip B has \(2\) unshaded sixths. 3. That leaves \(6-2=4\) shaded sixths, so B shows \(\frac{4}{6}\). 4. Because the sections are equal size and \(4>2\), \(\frac{4}{6}>\frac{2}{6}\).

Answer

Strip B is \(\frac{4}{6}\) shaded, and \(\frac{4}{6}>\frac{2}{6}\).
Compare fractions same denominator 27
Consider \(\frac{4}{6},\ \frac{5}{6},\) and \(\frac{7}{6}\). Order them from least to greatest. Which pair is closest together, and how many sixth-size parts separate each neighboring pair in the order?

Hints

- All three fractions are measured in sixths. - Order the numerators first. - Compare the differences between neighboring numerators to find the closest pair.

Solution

1. Ordering the numerators gives \(4<5<7\), so \(\frac{4}{6}<\frac{5}{6}<\frac{7}{6}\). 2. The first neighboring pair differs by \(5-4=1\) sixth-size part. 3. The second neighboring pair differs by \(7-5=2\) sixth-size parts. 4. Therefore, \(\frac{4}{6}\) and \(\frac{5}{6}\) are the closest pair.

Answer

\(\frac{4}{6}<\frac{5}{6}<\frac{7}{6}\). The first pair is \(1\) sixth apart, the second pair is \(2\) sixths apart, and \(\frac{4}{6}\) with \(\frac{5}{6}\) is closest.
Compare fractions same denominator 28
Fraction A is \(\frac{3}{4}\), and fraction B is \(\frac{5}{4}\). Two fourth-size parts are added to each fraction. Compare A and B before the change and compare the new fractions after the change. Does the order change?

Hints

- Compare the original equal-part counts first. - Apply the same numerator change to both fractions. - Check whether the new numerator order matches the original order.

Solution

1. Initially, \(3<5\), so \(\frac{3}{4}<\frac{5}{4}\). 2. Adding \(2\) fourths changes A to \(\frac{5}{4}\). 3. Adding \(2\) fourths changes B to \(\frac{7}{4}\). 4. Since \(5<7\), \(\frac{5}{4}<\frac{7}{4}\), so the order does not change.

Answer

Before: \(\frac{3}{4}<\frac{5}{4}\). After: \(\frac{5}{4}<\frac{7}{4}\). The order stays the same.
Compare fractions same denominator 29
Use the number line. Name points \(A\) and \(B\) as fractions with denominator \(3\). Then compare them and state how many third-size spaces apart they are.
Figure for problem 554049

Hints

- Count the equal spaces between consecutive whole numbers. - Count third-size spaces from \(0\) to each marked point. - With the same denominator, compare the numerators and the number of spaces between the points.

Solution

1. Each whole unit is divided into \(3\) equal spaces, so each small space represents \(\frac{1}{3}\). 2. Point \(A\) is \(4\) third-size spaces from \(0\), so \(A=\frac{4}{3}\). 3. Point \(B\) is \(5\) third-size spaces from \(0\), so \(B=\frac{5}{3}\). 4. Since \(5>4\), \(\frac{5}{3}>\frac{4}{3}\). The points are \(1\) third-size space apart.

Answer

\(A=\frac{4}{3}\), \(B=\frac{5}{3}\), and \(\frac{4}{3}<\frac{5}{3}\). They are \(1\) third-size space apart.
Compare fractions same denominator 30
Use the number line. Point \(X\) is shown. Fraction \(Y\) has the same denominator as \(X\) and is one half-size space to the left of \(X\). Write \(X\) and \(Y\) as fractions with denominator \(2\). Compare them, and state the whole number equal to \(Y\).
Figure for problem 554050

Hints

- Count how many half-size spaces make one whole on the line. - Name the shown point by counting half-size spaces from \(0\). - Moving one half-size space left changes the numerator by one while keeping the denominator fixed.

Solution

1. Each whole is divided into \(2\) equal spaces, so each small space is one half. 2. Point \(X\) is \(5\) half-size spaces from \(0\), so \(X=\frac{5}{2}\). 3. One half-size space to the left is \(4\) halves from \(0\), so \(Y=\frac{4}{2}\). 4. Therefore, \(\frac{4}{2}<\frac{5}{2}\), and \(\frac{4}{2}=2\).

Answer

\(X=\frac{5}{2}\), \(Y=\frac{4}{2}\), and \(\frac{4}{2}<\frac{5}{2}\). Also, \(Y=2\).
Compare fractions same denominator 31
How many more sections must be colored in bar a) so that it has exactly \(\frac{1}{8}\) more colored than bar b)? What fraction of bar a) will then be colored?
Figure for problem 558533

Hints

- Picture how bar a) should look when it is finished, before thinking about the extra coloring. - Then compare that finished amount with the part of bar a) that is already blue.

Solution

1. Each bar has \(8\) equal sections. Bar a) has \(2\) colored eighths and bar b) has \(5\) colored eighths. 2. For a) to have one eighth more than b), it must have \(6\) colored eighths. 3. Bar a) needs \(6-2=4\) more colored sections. 4. Its final colored fraction is \(\frac{6}{8}\).

Answer

Color \(4\) more sections in a). The final colored fraction will be \(\frac{6}{8}\).
Compare fractions same denominator 32
Panel A has \(8\) lights, with \(\frac{7}{8}\) of them on. Panel B also has \(8\) lights, with an unknown number on. If \(2\) lights are switched off in Panel A and \(2\) lights are switched on in Panel B, both panels show \(\frac{5}{8}\) of their lights on. What fraction of Panel B's lights were on at first? Compare the starting fractions.

Hints

- Work backward from the equal ending fractions. - Keep the total number of lights in each panel fixed while changing how many are on. - Compare the original numerators only after finding the missing one.

Solution

1. Panel B gains \(2\) lights that are on and ends at \(\frac{5}{8}\). 2. Its starting numerator was \(5-2=3\), so it started at \(\frac{3}{8}\). 3. Both starting fractions use eighths, and \(7>3\). 4. Therefore, \(\frac{7}{8}>\frac{3}{8}\).

Answer

Panel B started at \(\frac{3}{8}\). The starting comparison is \(\frac{7}{8}>\frac{3}{8}\).
Compare fractions same denominator 33
Two banners are different lengths. Banner A is \(8\,\text{in.}\) long, and \(\frac{3}{4}\) of it is painted. Banner B is \(12\,\text{in.}\) long, and \(\frac{2}{4}\) of it is painted. a) Compare the fraction numbers \(\frac{3}{4}\) and \(\frac{2}{4}\) using \(<\), \(>\), or \(=\). b) How many inches are painted on each banner? c) Explain why the greater fraction does not give a longer painted length in this situation.

Hints

- First compare the two fraction numbers using their common denominator. - For each banner, determine the length of one fourth from that banner's own total length. - Compare the two painted lengths with the order of the fraction numbers. - In the explanation, consider why the size of the reference whole matters.

Solution

1. a) The fractions have the same denominator. Three fourths contains more fourth-size fraction parts than two fourths, so \(\frac{3}{4} > \frac{2}{4}\). 2. b) Banner A is divided into fourths, so each fourth is \(8 \div 4 = 2\,\text{in.}\). Three fourths is \(3 \times 2 = 6\,\text{in.}\). 3. Banner B is divided into fourths, so each fourth is \(12 \div 4 = 3\,\text{in.}\). Two fourths is \(2 \times 3 = 6\,\text{in.}\). 4. c) The fraction numbers compare shares of a same-size whole, but the banners are different lengths. Here the painted physical lengths are equal even though \(\frac{3}{4} > \frac{2}{4}\).

Answer

a) \(\frac{3}{4} > \frac{2}{4}\) b) Banner A: \(6\,\text{in.}\); Banner B: \(6\,\text{in.}\) c) The wholes are different lengths. The same-denominator fraction comparison tells which fraction number is greater, but it does not by itself compare physical painted lengths from different-size wholes.

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