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

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

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