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Use number bonds to 10 to add/subtract one-digit and two-digit numbers

Lesson 5 / 15

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I can use number bonds to add and subtract one-digit and two-digit numbers.

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When the ones digits in an equation sum to ten, the sum in the equation will always be a multiple of ten. When subtracting a one-digit number from a multiple of ten, number bonds to ten can be used. The number being subtracted and the ones digit in the answer will be a number bond to ten.

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This content is by Cashar and published under an open licence.