Question

please help me to solve this some please​

Answer 1

Answer:

590

Step-by-step explanation:

Rounding each number to nearest ten

659=660

69=70

660 - 70 = 590

Answer 2

$659 - 69 \\ = 660 - 70 \\ = 590$

659 ≈ 660

659 ≈ 66069 ≈ 70

659 ≈ 660

69 ≈ 70

As, we rounded off to nearest tens.

In this case, if we do not estimate still our answer comes the same.

$659 - 69 \\ = 590$