This math topic focuses on practicing the skill of finding missing values in simple addition equations, where sums are rounded to tens. The problems are designed to improve understanding and proficiency in adding integers, specifically one and two-digit numbers. Each problem requires identifying the unknown integer that completes an addition equation to reach a given sum. These basic arithmetic problems are suitable for enhancing mental math capabilities and problem-solving skills, especially concerning basic addition operations.

Work on practice problems directly here, or download the printable pdf worksheet to practice offline.

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Addition - Missing Value, To Tens Worksheet

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Addition - Missing Value, To Tens
1
Solve for the missing value
A LaTex expression showing 11 + ? = 20
a
5
b
1
c
0
d
700
e
9
f
10
2
Solve for the missing value
A LaTex expression showing 18 + ? = 20
a
-100
b
-1
c
3
d
2
e
0
f
1
3
Solve for the missing value
A LaTex expression showing 32 + ? = 40
a
8
b
11
c
700
d
10
e
9
f
12
4
Solve for the missing value
A LaTex expression showing 44 + ? = 50
a
5
b
2
c
20
d
7
e
4
f
6
5
Solve for the missing value
A LaTex expression showing ? + 9 = 40
a
27
b
33
c
30
d
36
e
300
f
31
6
Solve for the missing value
A LaTex expression showing 45 + ? = 50
a
9
b
1
c
4
d
40
e
5
f
3
7
Solve for the missing value
A LaTex expression showing ? + 3 = 10
a
2
b
5
c
1
d
8
e
7
f
900
8
Solve for the missing value
A LaTex expression showing 23 + ? = 30
a
200
b
8
c
1
d
9
e
6
f
7