Question

Explain why you would make one of the addends a tens number when solving an addition problem.

Answer 1

It would be easier to solve, you would be adding 10+ whatever.

Answer 2

Consider the sum of following numbers

1. 23 +7=20 +10

2. 17 + 127=20+130

3. 5478 + 126= 5480 + 130

4. 65899+58423=65900+ 58420

Converted all these numbers to nearest tens,and then we can add these numbers Quickly.

As to add these numbers , we convert addends to nearest tens while solving an addition problem , it helps us in adding the numbers easily . The number when rounded having unit digit zero, makes our calculations easy.