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

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

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