Chapter 3: Playing with Number
Chapter 4:Basic Gemetrical Idea
Chapter 5:Understanding Elementry Shapes
Playing With Numbers
(a) Factors of 24 are:
24 = 1 x 24 = 2 x 12 = 3 x 8 = 4 x 6
The factors of 24 are: 1, 2, 3, 4, 6, 8, 12 and 24.
(b) Factors of 15 are:
15 = 1 x 15 = 3 x 5
All the factors of 15 are: 1, 3, 5 and 15.
(c) Factors of 21 are:
21 = 1 x 21 = 3 x 7
the factors of 21 are: 1, 3, 7 and 21.
(d) Factors of 27 are:
27 = 1 x 27= 3 x 9.
The factors of 27 are: 1, 3, 9 and 27.
(e) Factors of 12 are:
12 = 1 x 12= 2 x 6= 3 x 4
The factors of 12 are: 1, 2, 3, 4, 6 and 12.
(f) Factors of 20 are:
20 = 1 x 20= 2 x 10= 4 x 5
The factors of 20 are: 1, 2, 4, 5, 10 and 20.
(g) Factors of 18 are:
18 = 1 x 18= 2 x 9= 3 x 6
The factors of 18 are: 1, 2, 3, 6, 9 and 18.
(h) Factors of 23 are:
23 = 1 x 23
The factors of prime number 23 are: 1 and 23.
(i) Factors of 36 are:
36 = 1 x 36= 2 x 18= 3 x 12= 4 x 9= 6 x 6
The factors of 36 are: 1, 2, 3, 4, 6, 9, 12, 18 and 36.