Add and Subtract More Complex Fractions

In this worksheet, students practise adding and subtracting more complex fractions.

Key stage: KS 3

Curriculum topic: Number

Curriculum subtopic: Use Four Operations for All Numbers

Difficulty level:

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Worksheet Overview

QUESTION 1 of 10

This worksheet is about adding and subtracting more complex fractions.

Example

First find the lowest common multiple of 24 and 15.

24	48	96	120	...
15	30	45	60	75	90	105	120	...

It is 120

120 = 5 x 24 and 8 x 15

19	-	8	=	19 x 5 - 8 x 8	=	95 - 64	=	31
24	-	15	=	120	=	120	=	120

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