Name
Date

example
236
423
sum
Estimated Sum
240
420
660
Actual Sum
236
423
659
1
534
216
sum
Estimated Sum

Actual Sum

2
486
415
sum
Estimated Sum

Actual Sum

3
269
522
sum
Estimated Sum

Actual Sum

4
159
132
sum
Estimated Sum

Actual Sum

5
421
530
sum
Estimated Sum

Actual Sum

6
553
421
sum
Estimated Sum

Actual Sum

7
242
639
sum
Estimated Sum

Actual Sum

8
133
465
sum
Estimated Sum

Actual Sum

9
464
435
sum
Estimated Sum

Actual Sum

10
322
413
sum
Estimated Sum

Actual Sum

1
534
216
sum
Estimated Sum
530
220
750
Actual Sum
534
216
750
2
486
415
sum
Estimated Sum
490
420
910
Actual Sum
486
415
901
3
269
522
sum
Estimated Sum
270
520
790
Actual Sum
269
522
791
4
159
132
sum
Estimated Sum
160
130
290
Actual Sum
159
132
291
5
421
530
sum
Estimated Sum
420
530
950
Actual Sum
421
530
951
6
553
421
sum
Estimated Sum
550
420
970
Actual Sum
553
421
974
7
242
639
sum
Estimated Sum
240
640
880
Actual Sum
242
639
881
8
133
465
sum
Estimated Sum
130
470
600
Actual Sum
133
465
598
9
464
435
sum
Estimated Sum
460
440
900
Actual Sum
464
435
899
10
322
413
sum
Estimated Sum
320
410
730
Actual Sum
322
413
735

# Worksheet for Estimate the Sum by Nearest Ten

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 ten 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 ten 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, RankUpturn 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 10. 