Grade 4 Math Prime or Composite Numbers

47

• PRIME NUMBER

• COMPOSITE NUMBER

Answer explanation

47 is divisible only by 1 and itself (47)

47 ÷ 1 = 47

47 ÷  47 = 1

Tags

CCSS.4.OA.B.4

43

• PRIME NUMBER

• COMPOSITE NUMEBR

Answer explanation

43 is divisible only by 1 and itself (43)

43 ÷ 1 = 43

43 ÷  43 = 1

Tags

CCSS.4.OA.B.4

50

• PRIME NUMBER

• COMPOSITE NUMBER

Tags

CCSS.4.OA.B.4

35

• PRIME NUMBER 

• COMPOSITE NUMBER

Answer explanation

35 has two more factors.

35 is divisible by 1, 5, 7, 35

35 ÷ 1 = 35

35 ÷ 5 = 7

35 ÷ 7 = 5

35 ÷ 35 = 1

Tags

CCSS.4.OA.B.4

51

• PRIME NUMBER

• COMPOSITE NUMBER

Answer explanation

51 has two more factors, 1, 3, 17, and 51

51 ÷ 1 = 51

51 ÷ 51 = 1

51 ÷ 3 = 17

51 ÷ 17 = 3

Tags

CCSS.4.OA.B.4

44

• PRIME NUMBER

• COMPOSITE NUMBER

Answer explanation

4 has two more factors, 1, 2, 4, 11, 22 and 44

44 ÷ 1 = 44

44 ÷ 44 = 1

44 ÷ 2 = 22

44 ÷ 4 = 11

44 ÷ 11 = 4

44 ÷ 22 = 2

Tags

CCSS.4.OA.B.4

72

• PRIME NUMBER

• COMPOSITE NUMEBR

Answer explanation

72 has two more factors 1 , 2, 3, 4, 6, 8, 9, 12, 18, 24, 36, 72

72 ÷ 1 = 72

72 ÷ 72 = 1

72 ÷ 2 = 36

72 ÷ 36 = 2

72 ÷ 4 = 18

72 ÷ 18 = 4

72 ÷ 6 = 24

72 ÷ 24 = 6

72 ÷ 9 = 36

72 ÷ 36 = 9

Tags

CCSS.4.OA.B.4

17

• PRIME NUMBER

• COMPOSITE NUMBER

Answer explanation

The number 17 is divisible only by 1 and the number itself.

Tags

CCSS.4.OA.B.4

60

• PRIME NUMBER

• COMPOSITE NUMBER

Tags

CCSS.4.OA.B.4

19

• PRIME NUMBER

• COMPOSITE NUMBER

Tags

CCSS.4.OA.B.4