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Download Subtraction methods - Emmanuel Middle School
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A useful strategy when subtracting numbers which are close to a multiple of 10 using a number line can be to âover compensateâ ⢠Using a drawn number line, starting from the largest number your child needs to partition to count back in 10âs in their head â however they will subtract too much and need to compensate by adding at the end e.g 77 â 29 = ? - 10 - 10 - 10 +1 47 48 57 67 Answer = 48 77
