6 - Multiples and Factors
Worksheet Answers
1. (b)6
2. (c) Prime
4. (c) 5, 6, 15
5. (a) 6, 12, 18, 24 (b) 48
3. (b) 2
6. (a) 1, 2, 3, 4, 6, 8, 12, 16, 24, 48
(b) 1, 2, 4, 7, 8, 14, 28, 56
(d)1, 2, 4, 8, 13, 26, 52, 104
(c) 1, 3, 7, 9, 21, 63
7.(a)
70
(b)
5
14
42
2
21
3
2
7
7
7
7
1
1
1
360420
96 = 2 × 2 × 2 × 2 × 2 × 3
– 360 6
216 = 2 × 2 × 2 × 3 × 3 × 3
60 360
HCF = 2 × 2 × 2 = 8
– 360
X
HCF
= 60
8. (a) 64
= 2 × 2 × 2 × 2 × 2 × 2
9. (a) 112 = 2 × 2 × 2 × 2 × 7
(b)
(b) 45
=3×3×5
168 = 2 × 2 × 2 × 3 × 7
125 =
266 = 2 × 19
225 = 3 × 3 × 5 × 5
LCM= 2 × 2 × 2 × 2 × 3 × 7 × 19 = 6384 LCM = 3 × 3 × 5 × 5 × 5 = 1125
× 7
5 × 5 × 5
10. (a) 339, 450, 3348
(b) 25, 230, 475
(c) 292, 48, 5104
(d)4482, 366
(e) 86, 98, 206