Simplifying fractions
Name: _____________________ Date: __________
Show your thinking with numbers, words, or a drawing.
1. Write 8/20 in its simplest form.
2. Write 12/20 in its simplest form.
3. Write 12/16 in its simplest form.
4. Write 4/12 in its simplest form.
5. Write 4/16 in its simplest form.
Answer key · Simplifying fractions
1. 2/5
Find the biggest number that divides both 8 and 20: 4.
8 ÷ 4 = 2 and 20 ÷ 4 = 5.
So 8/20 = 2/5 in simplest form.
2. 3/5
Find the biggest number that divides both 12 and 20: 4.
12 ÷ 4 = 3 and 20 ÷ 4 = 5.
So 12/20 = 3/5 in simplest form.
3. 3/4
Find the biggest number that divides both 12 and 16: 4.
12 ÷ 4 = 3 and 16 ÷ 4 = 4.
So 12/16 = 3/4 in simplest form.
4. 1/3
Find the biggest number that divides both 4 and 12: 4.
4 ÷ 4 = 1 and 12 ÷ 4 = 3.
So 4/12 = 1/3 in simplest form.
5. 1/4
Find the biggest number that divides both 4 and 16: 4.
4 ÷ 4 = 1 and 16 ÷ 4 = 4.
So 4/16 = 1/4 in simplest form.
Try it together
Fold two equal strips of paper into different numbers of equal parts. Find two fractions that cover the same length.