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Self Practice 1.3b

1. Compare and arrange the following fractions in ascending order.
5 1 3 5 7 1 5 5 2 13 15
CHAPTER
,
,
,
,
1 (a) – – , – , (b) , – , – – , –
6 4 8 12 24 3 6 8 3 18 24
2. Compare and arrange the following fractions in descending order.
3 7 5 1 5 1 2 5 7 7 11
,
,
,
(a) , – , – , – (b) – , – – , – ,
5 20 12 8 6 2 9 9 12 18 18
How do you perform computations involving
combined basic arithmetic operations of LEARNING
STANDARDS
positive and negative fractions? Perform computations
involving combined basic
11 arithmetic operations of
positive and negative
Solve fractions by following the
2 2 5 5 1 5 order of operations.
1
(a) 1 × 1 – 2 (b) + 1 ÷ – 2
3 5 6 8 3 6

1
2 2 5 5 1 5 Division is
(a) 1 × 1 – 2 (b) + 1 ÷ – 2
3 5 6 8 3 6 performed first.
5 12 – 25 Calculation 2
1
= × 1 2 in the = 5 + 4 × – 6 2 Change ÷
3 30
brackets is 8 31 5 to × and the
1
5 1 13 performed reciprocal of
1
= × – 2 first. = 5 + – 8 2 5 6
3 30 8 5 – is – .
5
6
6
13 25 64
= – = –
18 40 40 Follow the order of
39 operations
= – ( )
40
× or ÷
+ or –

Self Practice 1.3c

1. Evaluate each of the following.

1 3 1 5 2 3 1 1 1
1
1
+ –
(a) 1 × 1 + 2 (b) – + 1 ÷ – 2 (c) –2 ÷ –3 2 1 2
6 4 5 6 3 7 2 3 6
1
1
1
5
1
2
1
2
3
(d) –6 × 3 – 4 1 2 (e) – + 2 – × 1 (f) – + – 4 2 × 2 – 5
7 2 3 6 8 3 4 5 6 16
16
Chapter 1
01 TB Math F1.indd 16 10/20/16 11:55 AM