Name ______________________Date ____________Score ____ / 12
Grade 4 practice
Factor pairs · 1–6
List all the factor pairs.
1.List all the factor pairs of 40.
2.List all the factor pairs of 54.
3.List all the factor pairs of 56.
4.List all the factor pairs of 45.
5.List all the factor pairs of 52.
6.List all the factor pairs of 44.
Prime and composite numbers · 7–12
Write prime or composite.
7.Is 36 prime or composite?
8.Is 50 prime or composite?
9.Is 53 prime or composite?
10.Is 49 prime or composite?
11.Is 51 prime or composite?
12.Is 44 prime or composite?
Answer key — Grade 4 practice
Factor pairs
1.1 × 40, 2 × 20, 4 × 10, 5 × 8
2.1 × 54, 2 × 27, 3 × 18, 6 × 9
3.1 × 56, 2 × 28, 4 × 14, 7 × 8
Prime and composite numbers
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