Page 4 - Mahir PBD KSSR Year 6 - Maths

Mathematics Year 6 Unit 2 Fractions, Decimals and Percentages

2. Convert any decimals to percentage of more than 100% and vice versa.

(a) Convert 3.1 to percentage. (b) Convert 245% to decimal.
Method 1: Method 1:
3.1 = (3.1 × 100)% 245% = 245
= (3.1 0 × 100)% 100
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= 310% = 245 ÷ 100

= 2.45
Method 2:
3.1 = 3 1 Method 2:
10 245% = 1 00 + 1 00 + 45
2
= 1 31 × 100 % 100 100 100
10
= (31 × 10)% = 2 + (45 ÷ 100)
= 310% = 2.45

3. Determine the values for percentage up to more than 100% from the quantity in decimals and vice
versa.

(a) 70% × 2.4 = 70 × 2.4 (b) 365% × 8.7 = 365 × 8.7
100 100
= 0.7 × 2.4 = 3.65 × 8.7
= 1.68 = 31.755

2
. 4 1 decimal place . 6 5 2 decimal places
3
× 0 . 7 1 decimal place × 8 . 7 1 decimal place
1 6 8 2 5 5 5
+ 0 0 0 + 2 9 2 0 0
1 . 6 8 2 decimal places 3 1 . 7 5 5 3 decimal places

0.5 5 2.55 25.5 5.1
(c) × 100% = × 100% (d) × 100% = × 100%
0.8 8 0.5 5
= 62.5% = 5.1 × 100%
Move the decimal = 510%
point. The number
of movement for
the upper and
lower number is
the same.

INFO

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02 Mahir Math Yr6 (2022).indd 29 01/03/2022 2:31 PM