SChand New Learning Composite Mathematics Class 6 Chapter 3 Playing With Numbers Exercise 3E

Exercise 3E

Question 1

(a) 24=3×2×2×2
=3×23

(b) 36=2×2×3×3
=22×32

(c) 210=2×3×5×7

(d) 180=2×2×3×3×5
=22×32×5

(e) 300=22×3×52


Question 2

(a) 32 =25

(b) 48= 24 x3

(c) 66= 2x 3x 11

(d) 72= 23 x 32

(e) 84= 22 x 3x 7

(f) 100= 22 x52

(g) 840= 23x 2 x 5 x 7

(h) 504 = 23 x 32 x7

(i) 2904= 23 x 3 x 112

(j) 13845= 34 x 5x 72


Question 3

343= 73


Question 4

(a) When all the factors are prime and their product is the original number.

(b) Prime factors of a number are all prime numbers where the factors of a number do not have to be prime.


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