+ 46

sum

+ 50

80

+ 46

80

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Name
Grade
School

Date
Questions10
Score

example

Addition

34

+ 46

sum

+ 46

sum

Estimated Sum

30

+ 50

80

+ 50

80

Actual Sum

34

+ 46

80

+ 46

80

1

Addition

90

+ 63

sum

+ 63

sum

Estimated Sum

Actual Sum

2

Addition

59

+ 39

sum

+ 39

sum

Estimated Sum

Actual Sum

3

Addition

65

+ 15

sum

+ 15

sum

Estimated Sum

Actual Sum

4

Addition

89

+ 44

sum

+ 44

sum

Estimated Sum

Actual Sum

5

Addition

90

+ 32

sum

+ 32

sum

Estimated Sum

Actual Sum

6

Addition

70

+ 37

sum

+ 37

sum

Estimated Sum

Actual Sum

7

Addition

56

+ 25

sum

+ 25

sum

Estimated Sum

Actual Sum

8

Addition

69

+ 28

sum

+ 28

sum

Estimated Sum

Actual Sum

9

Addition

59

+ 29

sum

+ 29

sum

Estimated Sum

Actual Sum

10

Addition

70

+ 42

sum

+ 42

sum

Estimated Sum

Actual Sum

Answers Key

1

Addition

90

+ 63

sum

+ 63

sum

Estimated Sum

90

+ 60

150

+ 60

150

Actual Sum

90

+ 63

153

+ 63

153

2

Addition

59

+ 39

sum

+ 39

sum

Estimated Sum

60

+ 40

100

+ 40

100

Actual Sum

59

+ 39

98

+ 39

98

3

Addition

65

+ 15

sum

+ 15

sum

Estimated Sum

70

+ 20

90

+ 20

90

Actual Sum

65

+ 15

80

+ 15

80

4

Addition

89

+ 44

sum

+ 44

sum

Estimated Sum

90

+ 40

130

+ 40

130

Actual Sum

89

+ 44

133

+ 44

133

5

Addition

90

+ 32

sum

+ 32

sum

Estimated Sum

90

+ 30

120

+ 30

120

Actual Sum

90

+ 32

122

+ 32

122

6

Addition

70

+ 37

sum

+ 37

sum

Estimated Sum

70

+ 40

110

+ 40

110

Actual Sum

70

+ 37

107

+ 37

107

7

Addition

56

+ 25

sum

+ 25

sum

Estimated Sum

60

+ 30

90

+ 30

90

Actual Sum

56

+ 25

81

+ 25

81

8

Addition

69

+ 28

sum

+ 28

sum

Estimated Sum

70

+ 30

100

+ 30

100

Actual Sum

69

+ 28

97

+ 28

97

9

Addition

59

+ 29

sum

+ 29

sum

Estimated Sum

60

+ 30

90

+ 30

90

Actual Sum

59

+ 29

88

+ 29

88

10

Addition

70

+ 42

sum

+ 42

sum

Estimated Sum

70

+ 40

110

+ 40

110

Actual Sum

70

+ 42

112

+ 42

112

Estimated sum of 2-digit numbers addition by rounding to the nearest ten worksheet with answers to practice & learn 3rd grade math problems on estimation is available online for free in printable & downloadable (pdf & image) format. Tap on PRINT, PDF or IMAGE button to print or download this 3rd grade estimated addition worksheet for quick approximation by rounding the 2-digit addends to the nearest 10.

In this third grade math worksheet, students are required to write the estimated sum & actual sum for the given 2-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 2-digit addends to the nearest ten numbers and then perform the addition. To find the actual sum, add the given 2-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 2-digit addition by using the corresponding answers key.

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 2-digit numbers by rounding addends to the nearest 10.

Related Worksheets

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- Rounding to the Nearest Tens for 3-Digit Numbers
- Estimate Addition by Rounding to the Nearest Tens for 3-Digit Numbers
- Estimate Subtraction by Rounding to the Nearest Tens for 3-Digit Numbers
- Rounding to the Nearest Hundred for 3-Digit Numbers

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