ckcvmiller
Answered

Which method do you prefer to use to find sums- count by tens and ones, use compatible numbers, or use friendly numbers and adjust? Explain why.

Verified Answer :

Kalahira

I prefer to use compatible numbers to find sums, as I find this tends to
be a faster and more efficient method through which to get to the
answer.

danielmaduroh

I prefer to use compatible numbers because by using this method it is easier to make a sum mentally. This is true because compatible numbers are close in value to the actual numbers. For a better understanding, let's take an example:


Suppose you have two numbers, namely 640 and 40. These two numbers are compatible for division because:


64 ÷ 4 = 16


So, we have used mental arithmetic to solve a more complex problem.

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