Page 101 - New Medley 4 Semester 2 PDF (Merged)

4 1 5 4+ 1+ 5 10
(b) + + = =
15 15 15 15 15

6 5 9 7
Example 11: Subtract: (a) - (b) -
10 10 16 16

6 5 6 − 5 1
Solution: (a) − = =
10 10 10 10
1
Here, is in its lowest form.
10
9 7 9 − 7 2
(b) − = =
16 16 16 16

But, result should be reduced in its lowest term.

2 2÷ 2 1
∴ = =
16 16 ÷2 8

9 2 5
Example 12: Simplify: + -
13 13 13

9 2 5 9+ 2- 5 11 -5 6
Solution: + - = = =
13 13 13 13 13 13

EXERCISE 1.5

A. Add.
2 1 3 2 5 3 9 7
1. and 2. and 3. and 4. and
4 4 8 8 12 12 20 20

6 5 4 5 6 11 9 13
5. and 6. and 7. and 8. and
18 18 20 20 25 25 32 32

B. Find the sum.

1 1 1 3 3 5
1. + 2. + 3. +
2 2 4 4 8 8

1 3 2 3 5 8 2 3
4. + 5. + + 6. + +
7 7 11 11 11 15 15 15

3 1 7 3 11 7
7. + + 8. + +
20 20 20 25 25 25

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