10 printable sets · answer key on every set

Multiplying Fractions Worksheets

CCSS 5.NF.B.4
20 problems per set
Answer key included

What this skill is

Multiplying two fractions: multiply the tops, multiply the bottoms, then simplify.

When it comes up: Fifth grade.

The mistake to watch for

Looking for a common denominator first. That is only needed for adding and subtracting; for multiplying the bottoms can differ.

How to help

Picture a fraction of a fraction: half of a third is a sixth, so 1/2 × 1/3 = 1/6.

Next: Dividing with unit fractions.

A worked example

2/3 × 3/4 = ___. Multiply the tops: 2 × 3 = 6. Multiply the bottoms: 3 × 4 = 12. 6/12 simplifies to 1/2.

Words to know

fraction: A number that names equal parts of a whole, like 3/4.
numerator: The top number in a fraction. It tells how many parts we mean.
denominator: The bottom number in a fraction. It tells how many equal parts the whole is cut into.
product: The answer you get when you multiply.
simplify: To write a fraction with the smallest numbers that still name the same amount, like 6/12 = 1/2.

Practice

Multiply. Write the answer in simplest form.

Showing Set 1 · 20 problems

3/8 × 1/5 = ___
2/3 × 3/6 = ___
5/6 × 1/5 = ___
3/8 × 1/4 = ___
2/3 × 2/7 = ___
2/5 × 2/6 = ___
2/7 × 3/7 = ___
5/7 × 3/8 = ___
2/3 × 1/2 = ___
1/3 × 1/3 = ___
5/7 × 3/7 = ___
3/6 × 2/6 = ___
1/5 × 1/6 = ___
2/5 × 4/8 = ___
2/3 × 2/8 = ___
1/2 × 4/7 = ___
2/3 × 5/8 = ___
5/6 × 2/5 = ___
1/2 × 2/6 = ___
1/4 × 4/7 = ___

Download this set20 problems · answer key included PDF

Answer key

3/40
1/3
1/6
3/32
4/21
2/15
6/49
15/56
1/3
1/9
15/49
1/6
1/30
1/5
1/6
2/7
5/12
1/3
1/6
1/7

All 10 sets

Each set is a different list of 20 problems with its own answer key. Use the buttons above to look at one on this page, or download any of them as a PDF.

How these sheets were made

Problems are generated for each set and checked against 5.NF.B.4 before the sheet is built — no duplicates, and every problem falls inside the standard's number range.