This is great for consolidating mental maths skills for addition and subtraction.
Compensating: when a number can be rounded to the nearest 10 easily, add or subtract the nearest 10 and then take-away/add back what you previously compensated
Bridging: when you subtract two numbers that are close together, count on from the lowest one
Number bonds: when you add two numbers, see if the units make a number bond to 10
Compensating: when a number can be rounded to the nearest 10 easily, add or subtract the nearest 10 and then take-away/add back what you previously compensated
Bridging: when you subtract two numbers that are close together, count on from the lowest one
Number bonds: when you add two numbers, see if the units make a number bond to 10
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Great, thank you.
A great way for my Year 3 class to learn. Thank you.
Very useful, thanks.
Thanks
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