Multiplying any 2-digit number by 11 Trick / #GoForItStarter

How to practise mental maths skills with your class? Multiplying any 2-digit number by 11 is a fun and useful maths trick. To perform it, simply add the digits of the number together and then put this sum between the original two digits.
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This resource is suitable to use with #GoForItApp.
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▸ Upload the worksheet to #GoForItApp available here to be able to display the questions on your whiteboard.
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