KmyaP443601 KmyaP443601

25-10-2022
Mathematics

contestada

Explain why a + b = b + a using numbers and a model. Use paper to draw the model.

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CindyM169844 CindyM169844

25-10-2022

We can model a + b as:

At the same way, we can model (b + a) as:

Now, we can see that the blue line has the same length in both situations. It means that a + b = b + a

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