Question

Find the actual and estimated sum by rounding off to the nearest thousands
Actual. Estimated
18312. .
+24109
______
​

Answer 1

Finding sum

Given: 18312 + 24109

To find: The actual and estimated sum by rounding off to the nearest thousands.

Solution:

18312

+ 24109

_______

42421

To estimate the sum by rounding off to the nearest thousands, we see that: 421 < 500, and thus when we round off the sum as required, we do not change the digit 2 in the thousands place.

Thus the estimated sum is 42000 (round off to the nearest thousands).

Answer:

1. Actual sum = 42421
2. Estimated sum = 42000

Note:

• If we have a number greater than 500 in place of 421, we simply add 1 to the digit in the thousands place in order to round off to the nearest thousands.

Answer 2

Answer:

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