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Cogito

Grade 3 Math · Chapter 5 · Lesson 7

Practice Worksheet

Comparing Fractions With the Same Top

Same number of pieces, so the piece size decides.

10 problems · about 13 minutes · 3.NF.A.3

NameDate

Figure — use these to answer the problems

Keep both top numbers the same and change the bottoms.
3/4
3/8
013/43/8

3/4 is greater than 3/8.

Left top number3
Left bottom number4
Right top number3
Right bottom number8
Figure 1

Warm-Up Review

From earlier lessons. Loosen up before the new work.

3 problems

  1. From “Comparing Fractions With the Same Bottom”

    Which is bigger, 3/4 or 1/4?

    • 3/4
    • 1/4

  2. From “Fractions Equal to One”

    6/6 equals which whole number?

    Answer

  3. From “Fractions on the Number Line”

    A line cut into 5 parts. How many parts along is 2/5?

    Answer

Warm Up

Straightforward practice. Get the method working first.

3 problems

  1. Which is bigger, 3/4 or 3/6?

    • 3/4
    • 3/6

  2. Does a bigger bottom number mean a bigger fraction?

    • No. It means smaller pieces.
    • Yes. Bigger is bigger.

  3. Which is bigger, 4/5 or 4/8?

    • 4/5
    • 4/8

Build It Up

The same ideas with more to keep track of.

1 problem

  1. Which is bigger, 1/2 or 1/6?

    • 1/2
    • 1/6

Stretch Yourself

Mixed problems. Work out what kind of question it is before you start.

3 problems

  1. Which is bigger, 5/6 or 5/8?

    • 5/6
    • 5/8

  2. Two Cakes

    Would you rather have 3/4 of a cake or 3/8 of the same cake?

    • 3/4.
    • 3/8.

  3. The Ribbon

    Which is longer, 2/5 of a metre or 2/8 of a metre?

    • 2/5.
    • 2/8.