Percentages of amounts practice
Finding a percentage of an amount gets easy once 10% is easy. Noggli starts with 50% and 10%, then builds up to any percentage and sale prices.
What your child practises
- Year 5find 50% and 10% of an amount
- Year 5find 25%, 20% and 1% of an amount
- Year 6find multiples of 10% and 5%
- Year 6find any percentage by building from 10% and 5%
- Year 6solve percentage-decrease problems (sale prices)
Mix-ups Noggli looks out for
- Finds the discount but forgets to take it off the price
Building percentages from 10%
10% is the amount divided by 10. From there: 20% is double 10%, 5% is half of 10%, 1% is the amount divided by 100. So 65% of 340 is 6 lots of 10% (204) plus 5% (17), which is 221.
25% is a quarter and 50% is a half, which is often quicker than going through 10%.
Sale prices and percentage decrease
A £60 squishy with 20% off: 20% of £60 is £12, so the new price is £60 − £12 = £48. Year 6 questions often stop children after the first step, so Noggli checks for that.
Helping at home
- Practise 10% of lots of numbers until it is quick: it is the key to everything else.
- Look at real price tags when shopping and ask how much 10% or 25% off would save.
- For sale questions, ask: is that the discount, or the new price?
Made for children who worry about getting it wrong
A clue, not a cross
A wrong answer gets a clue and another go. A second miss shows how it works, step by step.
No clock
Nothing counts down. Confidence first, speed follows on its own.
The right level
After a few questions Noggli knows where your child is, and every question after that adapts.
Related practice
Questions parents ask
How do you find a percentage of an amount?
Find 10% by dividing by 10, then build the percentage you need from 10%, 5% and 1%. For 30% of 40, 10% is 4, so 30% is 12.
What year do children learn percentages?
Percentages are introduced in Year 5, starting with 50%, 25%, 10% and 1%. Year 6 covers any percentage of an amount and simple percentage problems.
Why does my child give the discount instead of the sale price?
Finding 20% of £60 and stopping at £12 is a common slip. Noggli notices and asks your child what the shop would actually charge.
Practise this every day, at the right level
Noggli works out where your child is in every topic and adjusts each question to suit. Free, with no timers, no scores and no child accounts.