How to subtract - SSAT Elementary Level Quantitative

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Question

Use the triangles Screen shot 2015 08 20 at 11.07.59 ambelow to help you answer the subtraction problem.

Screen shot 2015 08 21 at 1.53.58 pm

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Answer

We have triangles and we want to subtract triangles, which means the same thing as take them away. We can cross off the triangles that we are subtracting, and count the number that we have left. In this case we have triangles left. Subtraction is like counting backwards. We can start at and count back .

Screen shot 2015 08 21 at 1.54.40 pm

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