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

Exercise 3A

Question 1

(a) 1, 2, 3, 4, 6, 12

(b) 1, 2, 7, 14

(c) 1, 19

(d) 1, 3, 7, 21

(e) 1, 2, 3, 4, 6, 8, 12, 24

(f) 1, 23

(g) 1, 2, 3, 6, 7, 14, 21, 42

(h) 1, 5, 17, 85

(i) 1, 73

(j) 1, 2, 4, 23, 46, 92


Question 2

(a) 2, 4, 6, 8, 10

(b) 4, 8, 12, 16, 20

(c) 6, 12, 18, 24, 30

(d) 9, 18, 27, 36, 45

(e) 10, 20, 30, 40, 50


Question 4

List of the multiples of 7 between 1 and 75 – 7, 14, 21, 28, 35, 42, 49, 56, 63, 70


Question 4

The all multiples of 9 up to 100 – 9, 18, 27, 36, 45, 54, 63, 72, 81, 90, 99


Question 5

(a) The ninth multiple of 75-9 × 75

= 675

(b) The multiples of 10 between 150 and 200 – 160, 170, 180, 190


Question 6

Addition Facts

Even + Even = Even, Example – 2+6=8

Odd + Odd = Even, Example – 3+5=8

Even + Odd = Odd, Example – 4+3=7

Multiplication Facts

Even  Even = Even, Example – 24=8

Odd  Odd = Odd, Example – 35=15

Even  Odd = Even, Example – 25=10 

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