Name
Date

example
326
513
sum
Estimated Sum
300
500
800
Actual Sum
326
513
839
1
624
306
sum
Estimated Sum

Actual Sum

2
576
505
sum
Estimated Sum

Actual Sum

3
359
612
sum
Estimated Sum

Actual Sum

4
249
222
sum
Estimated Sum

Actual Sum

5
511
620
sum
Estimated Sum

Actual Sum

6
643
511
sum
Estimated Sum

Actual Sum

7
332
729
sum
Estimated Sum

Actual Sum

8
223
555
sum
Estimated Sum

Actual Sum

9
554
525
sum
Estimated Sum

Actual Sum

10
412
503
sum
Estimated Sum

Actual Sum

1
624
306
sum
Estimated Sum
600
300
900
Actual Sum
624
306
930
2
576
505
sum
Estimated Sum
600
500
1100
Actual Sum
576
505
1081
3
359
612
sum
Estimated Sum
400
600
1000
Actual Sum
359
612
971
4
249
222
sum
Estimated Sum
200
200
400
Actual Sum
249
222
471
5
511
620
sum
Estimated Sum
500
600
1100
Actual Sum
511
620
1131
6
643
511
sum
Estimated Sum
600
500
1100
Actual Sum
643
511
1154
7
332
729
sum
Estimated Sum
300
700
1000
Actual Sum
332
729
1061
8
223
555
sum
Estimated Sum
200
600
800
Actual Sum
223
555
778
9
554
525
sum
Estimated Sum
600
500
1100
Actual Sum
554
525
1079
10
412
503
sum
Estimated Sum
400
500
900
Actual Sum
412
503
915

# Worksheet for Estimate the Sum by Nearest Hundred

How to Use this Worksheet

In this third grade math worksheet, students are required to write the estimated sum & actual sum for the given 3-digit addends by rounding off to the nearest hundred as like in the given solved example of this online workbook for estimation problems. To find the estimated sum, round the given 3-digit addends to the nearest hundred numbers and then perform the addition. To find the actual sum, add the given 3-digit addends directly and write the sum.

Teachers, parents or students can check or validate the completed math workbook containing the 3rd grade math questions for writing estimated & actual sum for 3-digit addition by using the corresponding answers key.

Generate More Worksheets

To effectively assist math learning or teaching, Maths AI allow registered students, teachers or parents to generate unlimited set of grade-3 math questions & answers by using this "NEW WORKSHEET" button to prepare or practice exam, assignments, classwork or homework problems & solutions on estimated sum for 3-digit numbers by rounding addends to the nearest 100.