Maths trick
Percentages of amounts
Find 10% first, then build the percentage you need from 10% and 5% pieces.
Ages 10–14
Worked example
Tap through the steps. Each step can be read aloud.
Step 1 of 4
Find 35% of 80. Start with 10%: divide by 10, so 10% of 80 is 8.
Quick practice
Five fresh questions, marked straight away. Use the trick!
Find 10% first, then build the percentage you need from 10% and 5% pieces.