Question

Give one example of when you would use the friendly numbers strategy to subtract. Explain why.

Answer 1

U can also use agarothim strategy

Answer 2

In the addition process this usually involves:

rounding numbers up to the nearest multiple of 10 or 100 subtracting the extras that were added at the end.

In the subtraction process this usually involves subtracting too much and completing the calculation by putting some back.