Page 89 - Start Up Mathematics_5

3. When 0 is divided by a fraction, the result is 0.

8 11
For example, 0 ÷ = 0 × = 0
11 8
4. A fraction cannot be divided by 0 as divisibility by 0 is not defined.
3
For example, ÷ 0 is not defined.
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5. When a fraction is divided by 1, the result is the fraction itself.
15 15 1 15 1 15 × 1 15
For example, ÷ 1 = ÷ = × = =
23 23 1 23 1 23 × 1 23

EXERCISE 5.3

1. Find the reciprocal of the following numbers.
3 2 3 9
(a) (b) (c) (d) (e) 14
11 5 16 15
12 27 82
(f) 20 (g) (h) 1 (i) (j)
17 43 57
108 81 72 15 99
(k) (l) (m) (n) (o)
75 54 103 19 134
2. Find the solution.

1 2 3 3 1
(a) 7 ÷ (b) 22 ÷ (c) 13 ÷ (d) 30 ÷ (e) 32 ÷ 2
3 5 5 10 3
6 5 4 8 24
(f) ÷ 3 (g) ÷ 2 (h) ÷ 5 (i) ÷ 4 (j) ÷ 8
7 11 9 15 15
13 13 6 3 1 1
(k) ÷ 2 (l) ÷ 6 (m) 3 ÷ 13 (n) 4 ÷ 2 (o) 25 ÷ 3
7 10 11 8 4 5

3. Divide the following fractions.
2 8 6 14 7 1 26 8 1 20
(a) ÷ (b) ÷ (c) ÷ (d) ÷ (e) 3 ÷
7 21 11 22 9 3 25 15 8 18
1 3 5 4 1 8 48 16 72 18
(f) 5 ÷ (g) 4 ÷ 2 (h) 7 ÷ 4 (i) ÷ (j) ÷
4 16 9 27 3 9 35 25 39 13
4. Fill in the blanks.
5 5 8 13
(a) ÷ = ________ (b) ÷ 1 = ________ (c) 0 ÷ = ________
7 7 11 15
9 11 11 16
(d) ÷ 0 = ________ (e) ÷ = ________ (f) ÷ 1 = ________
20 15 15 21
Word Problems
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Example 19: At Pradeep Gaming Station, of the games are racing games. Among these
2
racing games, 2 are car racing games. What fraction of games at Pradeep
5
Gaming Station are car racing games?

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