4Grade Factors - Math Worksheets 4 Kids

[Pages:12]:RUNERRN



Factors

10

9 20

8 19 30

7 18 29 40

6 17 28 39 50 5 16 27 38 49 60 4 15 26 37 48 59 70 3 14 25 36 47 58 69 80 2 13 24 35 46 57 68 79 90 1 12 23 34 45 56 67 78 89 100 11 22 33 44 55 66 77 88 99 21 32 43 54 65 76 87 98 31 42 53 64 75 86 97 41 52 63 74 85 96

51 62 73 84 95 61 72 83 94

71 82 93

81 92

91

2

22

4 11

88

4th

Grade

4

2

Listing the factors

Easy

List out all the possible factors for each number.

1) 24

2) 35

3) 9

4) 42

5) 50

6) 19

7) 12

8) 28

9) 7

10) 16

11) 18

12) 45

?

?1?

Listing the factors

List out all possible factors for each number.

1) 88

2) 42

Moderate

3) 64

4) 55

5) 100

6) 6

7) 76

8) 82

9) 60

10) 96

?

?2?

Factors: Product Strategy

Easy

Complete the product strategy to nd the factors of each number.

1) 36

2) 12

36 = 36

1

= 12

2

= 36

6 = 12

12 = 36

3

= 12

4

= 36

6 = 36 The factors of 36 are

The factors of 12 are

3) 28 1 2

= 28 = 28 7 = 28

4) 45 5

45 = 45 15 = 45

= 45

The factors of 28 are

The factors of 45 are

5) Write your own product strategy to nd the factors of 50.

The factors of 50 are

?

?3?

Factors: Product Strategy

Moderate

Complete the product strategy to nd the factors of each number.

1) 60

2) 78

60 = 60

2

= 60

3

= 60

15 = 60

12 = 60

6

= 60

1

= 78

39 = 78

3

= 78

13 = 78

The factors of 60 are

The factors of 78 are

3) 56 1

7

= 56 28 = 56 14 = 56

= 56

4) 92 4

92 = 92 46 = 92

= 92

The factors of 56 are

The factors of 92 are

5) Write your own product strategy to nd the factors of 84.

The factors of 84 are

?

?4?

Prime Factor Tree

Complete the prime factor tree for each number.

1)

16

2)

2

14

Easy

42

2

2

2

3)

40

2

2

5

4) 2

24 4

2

5)

18

6)

2

3

30 10 2

?

?5?

Printable Workbooks & Worksheets @

Identify: Prime or Composite

A) Circle all the Prime numbers.

13

54

37

96

89

45

61

29

2

10

69

36

53

47

41

79

72

5

97

27

84

B) Circle all the Composite numbers.

73

92

79

7

21

80

17

8

97

15

83

19

62

51

11

4

23

32

67

3

49

C) Multiple choice questions.

1) Choose the greatest prime number.

a) 74

b) 23

c) 69

2) Choose the smallest composite number.

a) 12

b) 59

c) 8

?

d) 31 d) 43

?16?

 ................
................

In order to avoid copyright disputes, this page is only a partial summary.

Google Online Preview   Download