The idea is to try and make all the numbers from 0 to 20 by using BIDMAS.
The only number you are allowed to use is 4.
You MUST use four lots of 4 in each equation (number sentence).
You may not use any other numbers.
If you want to find 0 you can use the following sum:
(4 + 4) – (4 + 4) = 0
To find 3 you can use:
(4 + 4 + 4) ÷ 4 = 3
This is a ready to go lesson that will take an hour+ depending on ability level. It also has a simple extension task.
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