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

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

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