Worksheet on Multiples and Factors
1. List the first five multiples of the following numbers:
(i) 5
(ii) 10
(iii) 7
(iv) 11
(v) 14
(vi) 20
(vii) 21
(viii) 13
(ix) 15
(x) 17
Answer:
(i) 5, 10, 15, 20, 25
(ii) 10, 20, 30, 40, 50
(iii) 7, 14, 21, 28, 35
(iv) 11, 22, 33, 44, 55
(v) 14, 28, 42, 56, 70
(vi) 20, 40, 60, 80, 100
(vii) 21, 42, 63, 84, 105
(viii) 13, 26, 39, 52, 65
(ix) 15, 30, 45, 60, 75
(x) 17, 34, 51, 68, 85
2. Choose the numbers that are factors of 24
5 6 2 7 8 12 4 3 14 19 24
Answer:
6, 2, 8, 12, 4, 3, 24
3. Choose the numbers that are multiples of 15
30 45 84 75 36 65 105 150 165 180 120 130
Answer:
30, 45, 75, 105, 150, 165, 180, 120
4. Choose the numbers which are multiple of 3 as well as factor of 36
15 13 6 10 4 21 12 9
Answer:
6, 12, 9
5. Write the multiples of 8 between 65 and 75
Answer:
64, 72
6. Write the factors of 32 between 5 to 25
Answer:
8, 16
7. List all the factors of:
(i) 12
(ii) 15
(iii) 25
(iv) 126
(v) 81
(vi) 56
(vii) 64
(viii) 96
(ix) 84
(x) 50
Answer:
(i) 1, 2, 3, 4, 6, 12
(ii) 1, 3, 5, 15
(iii) 1, 5, 25
(iv) 1, 2, 3, 6, 7, 9, 14, 18, 21, 42, 63, 126
(v) 1, 3, 9, 27, 81
(vi) 1, 2, 4, 7, 8, 14, 28, 56
(vii) 1, 2, 4, 8, 16, 32, 64
(viii) 1, 2, 3, 4, 6, 8, 12, 16, 24, 32, 48, 96
(ix) 1, 2, 3, 4, 6, 7, 12, 14, 21, 28, 42, 84
(x) 1, 2, 5, 10, 25, 50
8. Write the sixth, eighth and tenth multiple of 9
Answer:
The sixth, eighth and tenth multiple of 9 are: 54, 72, 90
9. Write the five multiples and first two common multiples of the pair of numbers:
(i) 12
16
(ii) 20
25
(iii) 6
8
(iv) 4
2
(v) 18
9
Answer:
(i) Multiples of 12: 12, 24, 36, 48, 60
Multiples of 16: 16, 32, 48, 64
Common multiple 12 & 16: 48 and 96
(ii) Multiples of 20: 20, 40, 60, 80, 100
Multiples of 25: 25, 50, 75, 100, 125
Common multiple of 20 & 25: 100 and 200
(iii) Multiples of 6: 6, 12, 18, 24, 30
Multiples of 8: 8, 16, 24, 32, 40
Common multiples of 6 & 8: 24 and 48
(iv) Multiples of 4: 4, 8, 12, 16, and 20
Multiples of 2: 2, 4, 6, 8, 10
Common multiples of 4 & 2 = 4 and 8
(v) Multiples of 18: 18, 36, 54, 72, 90
Multiples of 9: 9, 18, 27, 36, 45
Common multiples of 18 and 9: 18 and 36
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