help you decide what type of subtraction operation to use
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Is the difference under 10?
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NO
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is the difference between 10 and 50
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NO
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Are all digits in the larger number higher than the lower number?
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NO
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Is there a zero in your number?
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NO
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go to the next box!
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YES
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YES
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YES
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YES
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use fingers to count up from the smallest number
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add- jump to the nearest 10, add multiples of 10, then keep jumping in 1's
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easy column subtraction
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Try using empty number line of expanded decomposition (eg 502-362)
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Are there decimals?
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YES
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NO
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Remember it's not just the columns that are the same, keep your decimal point in the same place!
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Use expanded or column method!
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Find The Difference
