NCERT Class 6 Mathematics Third Chapter Playing with Numbers Exercise 3.1 Solutions

EXERCISE 3.1

(1) Write all the factors of the following numbers:

(a) 24 = 1, 2, 3, 4, 6, 8, 12, 24

(b) 15 = 1, 3, 5, 15

(d) 27 = 1, 3, 9, 27

(e) 12 = 1, 2, 3, 4, 6, 12

(f) 20 = 1, 2, 4, 5, 10, 20

(g) 18 = 1, 2, 3, 6, 9, 18

(h) 23 = 1, 23

(i) 36 = 1, 2, 3, 4, 6, 9, 12, 18, 36

(2) Write first five multiples of:

(a) 5 = 5, 10, 15, 20, 25

(b) 8 = 8, 16, 24, 32, 40

(3) Match the items in column 1 with the items in column 2.

(4) Find all the multiples of 9 up to 100.

Ans: 9, 18, 27, 36, 45, 54, 63, 72, 81, 90, 99