How do you estimate 8,733 + 7,423 + 13,756 by first rounding each number to the nearest thousand?

1 Answer
Feb 21, 2017

The estimate would be 30,000 .

Explanation:

Since you first are rounding each number to the nearest thousand, that is your first step.

1) Take 8,733 first:

Hundreds place: 7

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Remember, if the number in the hundreds place is <= 4 , then we must round the number down. If the number is >= 5 , then we must round the number up

Since the hundreds place in 8,733 is 7 , this means that the number is rounded up.

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Therefore, 8,733 becomes 9,000 .

2) Now 7,423 :

Hundreds place: 4

Therefore, 7,423 becomes 7,000 .

3) Finally, 13,756 :

Hundreds place: 7

Therefore, 13,756 becomes 14,000 .

4) Now all you have to do is add up all of your estimated values:

9,000 + 7,000 + 14,000

= 16,000 + 14,000

= 30,000