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Rob says he can use 2 x 5 to find 4 x 5. is he correct

1 Answer

1 vote

Answer:

Yes, Rob can use 2 × 5 for multiplication of 4 × 5.

Explanation:

We are given the following information in the question:

Rob can use 2 × 5 for multiplication of 4 × 5.

It can be used in the following manner:


4* 5\\= (2* 2)* 5\\\text{By associative property of multiplication}\\= 2* (2* 5)\\= 2* 10\\=20\\=4* 5

Hence, Rob can do the multiplication in this way.

User Cyphus
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