Page 5 - Syok Praktis PBD (2023) Mathematics TH4

Mathematics Year 4 Practice 2 Fractions, Decimals and Percentages

Example: 4.713 × 5 = Example: Decimal point shift

3 1 1 7.3 ÷ 100 = 0.173 to left based on the
4 . 7 1 3 3 decimal places. number of zero(s).
× 5
Product also in 3 Contoh:
2 3 . 5 6 5 decimal places. 4 6.0 ÷ 1 000 = 0.046

Example: 12. Convert fraction into percentage.
Decimal point shifts to the
3.8 × 10 = 38 Example:
right based on the number
3
of zero(es). Convert — into percentage.
Example: 4
3 × 25
3
0.6 9 1 × 1 000 = 691 Method 1: — = ——— Equivalent
4 4 × 25 fraction with
75 denominator
11. Division of decimals. = —– 100.
100
Example: 9.6 ÷ 6 = 1.6 = 75%
Decimal point must be Multiply
3
3
on a straight line. Method 2: — = — × 100% fraction
1 . 6 4 4
6  9 . 6 = 75% by 100%.
– 6
3 6 13. Convert percentage into fraction.
– 3 6 Example:
0 Convert 40% into fraction.
40
Example: 1.974 ÷ 3 = 0.658 40% = —– Write in fraction
0 . 6 5 8 100 of hundredth.
2
3  1 . 9 7 4 = — Simplify the fraction.
– 0 5
1 9
– 1 8 14. Percentage from a certain quantity.
1 7 Example: 30% of 40 T-shirts
30
– 1 5 30% × 40 = —– × 40
2 4 100
– 2 4 = 12 T-shirts

Objective Questions

Instruction: Answer all the questions. Select only one correct answer.

2.1 Fraction

1. The diagram below shows a mixed number. What is the improper fraction for the mixed
number?
3 17
A — C —
7 7
2 20
B — D —
7 7

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