Reducing to lowest terms
Name
It’s Time to Reduce
A fraction is in lowest terms if the numerator and denominator have no common factors other
than one. To reduce a fraction to lowest terms, follow these steps.
5
10
5 ÷ 5
10 ÷ 5
1. Find the GCF for
5 and 10.
=
1
2
5
10
2. Divide.
=
1
2
Shade each space with a fraction in lowest terms blue. Shade each space with a
fraction not in lowest terms yellow.
8
16
4
8
7
21
1
4
2
4
3
11
4
12
1
5
1
5
2
9
9
18
1
2
1
8
2
6
2
13
1
9
3
9
4
7
4
6
6
10
5
9
4
20
1
6
3
15
3
4
3
21
4
5
10
20
3
6
2
5
2
20
10
12
2
15
7
8
6
12
6
8
10
15
2
10
2
8
5
10
5
20
1
3
2
5
8
12
8
20
15
20
3
8
5
30
4
10
9
10
On another piece of paper, reduce each fraction shaded yellow.
Scholastic Success With Fractions and Decimals: Grade 5, © Scholastic Teaching Resources
9
1/7, 5/10 = 1/2, 5/20 = 1/4,
2/6 = 1/3, 15/20 = 3/4; 4/12
= 1/3, 10/12 = 5/6, 4/20 =
1/5, 3/9 = 1/3, 2/8 = 1/4,
8/20 = 2/5, 8/12 = 3/4, 5/20
= 1/6, 4/10 = 2/5
Page 9
8
16
4
8
7
21
1
4
2
4
3
11
4
12
2
20
4
7
1
5
2
9
9
18
1
2
1
8
2
6
2
13
1
9
3
9
3
15
4
6
6
10
5
9
4
20
1
6
3
4
3
21
4
5
10
20
3
6
2
5
1
5
10
12
2
15
7
8
6
12
6
8
10
15
2
10
2
8
5
10
5
20
1
3
2
5
8
12
8
20
15
20
3
8
5
30
4
10
9
10
4/8 = 1/2, 7/21 = 1/3, 2/10
= 1/5, 10/20 = 1/2, 3/15 =
1/5; 6/8 = 3/4, 6/12 = 1/2,
3/6 = 1/2, 6/10 = 3/5, 4/6 =
2/3, 9/18 = 1/2; 10/15 =
2/3, 2/20 = 1/10, 3/21 =