I can find a percentage of a quantity using a multiplier.
I can find a percentage of a quantity using a multiplier.
Associative law - The associative law states that a repeated application of the operation produces the same result regardless of how pairs of values are grouped. We can group using brackets.
A single digit percentage is incorrectly worked out by dividing by 10 and not 100 e.g 3% = 0.3
Two responses can be used to remind students that to covert a percentage into a decimal; we divide by 100; using 3%, ask what 30% is as a decimal and 3% as a decimal. Pupils realise they cannot be the same. A place value chart also helps.
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15% - 0.15
21% - 0.21
9% - 0.09
90% - 0.9
0.9% - 0.009
1.5% - 0.015
53% of 900 - 0.53 × 900
35% of 900 - 0.35 × 900
2% of 900 - 0.02 × 900
20% of 900 - 0.2 × 900
