Name
Date

example
1424
3334
sum
Estimated Sum
1420
3300
4720
Actual Sum
1424
3334
4758
1
4853
3833
sum
Estimated Sum

Actual Sum

2
7715
1102
sum
Estimated Sum

Actual Sum

3
2916
2602
sum
Estimated Sum

Actual Sum

4
5740
3532
sum
Estimated Sum

Actual Sum

5
7786
1406
sum
Estimated Sum

Actual Sum

6
6849
1141
sum
Estimated Sum

Actual Sum

7
7989
4404
sum
Estimated Sum

Actual Sum

8
8415
8115
sum
Estimated Sum

Actual Sum

9
5669
5227
sum
Estimated Sum

Actual Sum

10
1999
1063
sum
Estimated Sum

Actual Sum

1
4853
3833
sum
Estimated Sum
4850
3800
8650
Actual Sum
4853
3833
8686
2
7715
1102
sum
Estimated Sum
7720
1100
8820
Actual Sum
7715
1102
8817
3
2916
2602
sum
Estimated Sum
2920
2600
5520
Actual Sum
2916
2602
5518
4
5740
3532
sum
Estimated Sum
5740
3500
9240
Actual Sum
5740
3532
9272
5
7786
1406
sum
Estimated Sum
7790
1400
9190
Actual Sum
7786
1406
9192
6
6849
1141
sum
Estimated Sum
6800
1140
7940
Actual Sum
6849
1141
7990
7
7989
4404
sum
Estimated Sum
7990
4400
12390
Actual Sum
7989
4404
12393
8
8415
8115
sum
Estimated Sum
8420
8100
16520
Actual Sum
8415
8115
16530
9
5669
5227
sum
Estimated Sum
5670
5200
10870
Actual Sum
5669
5227
10896
10
1999
1063
sum
Estimated Sum
2000
1100
3100
Actual Sum
1999
1063
3062

# Addition by Rounding to the Place Value of Underlined Digit Worksheet

How to Use this Worksheet

In this fourth grade math worksheet, students are required to find the estimated sum by rounding to the place value of underlined digit of a 4-digit number (rounding marked digit to the nearest 10 or 100) as like in the given solved example of this online workbook for estimation problems.

To round the underlined digit to the nearest 10, increase or decrease to the next TEN or earlier TEN, if the value of Ones digit of the given 4-digit number is greater than or equal to 5, or less than 5 respectively.

To round the underlined digit to the nearest 100, increase or decrease to the next HUNDRED or earlier HUNDRED, if the value of combination of Tens & Ones digit of the given 4-digit number is greater than or equal to 50, or less than 50 respectively.

Teachers, parents or students can check or validate the completed math workbook containing the set of 4th grade math questions for practice estimate addition by rounding underlined digit to the nearest ten or hundred by using the corresponding answers key.

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To effectively assist math learning or teaching, Maths AI allow registered students, teachers or parents to generate unlimited set of grade-4 math questions & answers by using this "NEW WORKSHEET" button to prepare or practice exam, assignments, classwork or homework problems & solutions on estimate sum by round to the place value of underlined digit.