Question

explain how you could use integers to estimate -28.3•(-479)

Answer 1

The result of the multiplication is; 13,555.7

Using integers to estimate products.

To use integers; we must convert the decimal number to an integer.

Therefore, since we have, -28.3; we can multiply by 10 so that we have;

• -283 •(-479)

• -283 × (-479)

• = 135,557

We can then divide the result by 10 so as to the account for the shift of decimal; In essence, we have; 135,557/10 = 13,555.7

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