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Question P5–P6 Units and parts

Today’s problem — free all day, every step. Every day has one.

Mrs Kumar's bonus — shopping, charity, savings

Mrs Kumar received a bonus of $3,600. She spent 30% of it on shopping and 15% on charity donations, and saved the rest. How much did she save?

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About this method

Units and parts

Cut one amount into equal shares. One number tells you what a share is worth.

In this one. Combine the two spending percentages first, so “the rest” becomes one clean subtraction from 100%.

In allone share

How to spot it

A single amount is split by a ratio, a fraction or a percentage. One extra number gives you the leftover, the difference, or the value of one share.

Common mistake

Children match the given number to the wrong number of shares, using the whole bar when the number covers only the leftover or the difference between two people's shares.

Practise a similar question

Standard Ayesha read 5/8 of a book over the weekend. She had 51 pages left to read. How many pages does the book have in total?
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