Common Core: 4.OA
Answer Key
Grade 4factorsEasy

Prime Numbers 1

Identify prime numbers

10 problems

1.
2
×1
__
2.
4
×0
__
3.
6
×0
__
4.
8
×0
__
5.
10
× 0
__
6.
12
× 0
__
7.
14
× 0
__
8.
16
× 0
__
9.
18
× 0
__
10.
20
× 0
__