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1 May (Secondary)
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Age
5 to 11
Challenge Level
Primary curriculum
Problem
Getting Started
Teachers' Resources
Try putting your starting number into a place value grid. How many 10s do you have at the beginning? How many 1s?
Add 9 to your number and then put your answer into the place value grid. How many 10s do you have now? How many 1s?
What do you notice?