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

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

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