10 printable sets · answer key on every set

Equivalent Fractions Worksheets

CCSS 4.NF.A.1
20 problems per set
Answer key included

What this skill is

Fractions that name the same amount, like 2/3 and 8/12: multiply the top and the bottom by the same number.

When it comes up: Fourth grade, after fractions as parts of a whole in third grade.

The mistake to watch for

Multiplying only the bottom number, which changes the amount. Whatever you do to the denominator, do to the numerator too.

How to help

Draw two bars of the same size: one cut into 3 parts with 2 shaded, one cut into 12 parts. Shade the same amount and count: 8.

Next: Adding and subtracting fractions.

A worked example

2/3 = ___/12. The bottom number went from 3 to 12, which is × 4. Do the same to the top: 2 × 4 = 8. So 2/3 = 8/12.

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.
equivalent: Equal in value. 1/2 and 2/4 are equivalent fractions.
multiply: To add the same number again and again, in a faster way.

Practice

Write the missing numerator.

Showing Set 1 · 20 problems

3/4 = ___/24
3/5 = ___/15
5/6 = ___/24
1/4 = ___/12
1/4 = ___/24
1/3 = ___/9
1/5 = ___/25
1/2 = ___/10
1/5 = ___/30
1/3 = ___/15
2/3 = ___/18
1/2 = ___/6
1/2 = ___/8
2/6 = ___/30
2/6 = ___/24
4/5 = ___/30
4/5 = ___/15
1/2 = ___/12
3/6 = ___/36
1/6 = ___/36

Download this set20 problems · answer key included PDF

Answer key

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 4.NF.A.1 before the sheet is built — no duplicates, and every problem falls inside the standard's number range.