Question

estimate the sum and difference 845784573​

Answer 1

Answer:

answer

Step-by-step explanation:

Rounding off 3.28 we get 3

Rounding off 2.75 we get 3

Hence, by estimation, sum is 3+3=6

Answer 2

Answer:

The first step in estimating a sum or a difference is to round the numbers, by changing them to the nearest power of ten, hundred, thousand, etc. Round the numbers first, then use mental math to estimate an answer. When rounding, follow these rounding rules: If the number being rounded is less than 5, round down.

Step-by-step explanation:

Hope it helps you...

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