Addition Drills (1s) - Math Worksheet With Answer Key

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Name:
Addition Drills (1s)
Solve each problem.
4
3
10
8
9
5
2
6
1
7
+
1
+
1
+
1
+
1
+
1
+
1
+
1
+
1
+
1
+
1
5
4
11
9
10
6
3
7
2
8
1
1
1
1
1
1
1
1
1
1
+
9
+
3
+
1
+
10
+
8
+
6
+
4
+
5
+
2
+
7
10
4
2
11
9
7
5
6
3
8
2
10
4
7
3
5
1
9
6
8
+
1
+
1
+
1
+
1
+
1
+
1
+
1
+
1
+
1
+
1
3
11
5
8
4
6
2
10
7
9
1
1
1
1
1
1
1
1
1
1
+
5
+
10
+
1
+
7
+
4
+
6
+
8
+
2
+
9
+
3
6
11
2
8
5
7
9
3
10
4
8
9
4
3
5
6
7
2
1
10
+
1
+
1
+
1
+
1
+
1
+
1
+
1
+
1
+
1
+
1
9
10
5
4
6
7
8
3
2
11
1
1
1
1
1
1
1
1
1
1
+
9
+
4
+
2
+
8
+
7
+
1
+
6
+
10
+
5
+
3
10
5
3
9
8
2
7
11
6
4
8
4
1
2
5
3
10
6
9
7
+
1
+
1
+
1
+
1
+
1
+
1
+
1
+
1
+
1
+
1
9
5
2
3
6
4
11
7
10
8
1
1
1
1
1
1
1
1
1
1
+
7
+
10
+
9
+
6
+
1
+
8
+
3
+
2
+
5
+
4
8
11
10
7
2
9
4
3
6
5
8
3
10
4
9
2
6
7
5
1
+
1
+
1
+
1
+
1
+
1
+
1
+
1
+
1
+
1
+
1
9
4
11
5
10
3
7
8
6
2
1
1
1
1
1
1
1
1
1
1
+
2
+
4
+
8
+
10
+
9
+
5
+
7
+
1
+
3
+
6
3
5
9
11
10
6
8
2
4
7
Math
8

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