Addition Drills (3s) - Math Worksheet With Answer Key
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1
2Name:
Addition Drills (3s)
Solve each problem.
1
2
7
4
5
10
6
9
3
8
+
3
+
3
+
3
+
3
+
3
+
3
+
3
+
3
+
3
+
3
4
5
10
7
8
13
9
12
6
11
3
3
3
3
3
3
3
3
3
3
+
8
+
7
+
6
+
1
+
9
+
10
+
2
+
3
+
4
+
5
11
10
9
4
12
13
5
6
7
8
8
10
9
6
5
3
7
2
1
4
+
3
+
3
+
3
+
3
+
3
+
3
+
3
+
3
+
3
+
3
11
13
12
9
8
6
10
5
4
7
3
3
3
3
3
3
3
3
3
3
+
6
+
3
+
4
+
2
+
10
+
9
+
8
+
5
+
1
+
7
9
6
7
5
13
12
11
8
4
10
1
8
10
6
4
5
2
9
3
7
+
3
+
3
+
3
+
3
+
3
+
3
+
3
+
3
+
3
+
3
4
11
13
9
7
8
5
12
6
10
3
3
3
3
3
3
3
3
3
3
+
10
+
4
+
6
+
5
+
2
+
3
+
7
+
9
+
1
+
8
13
7
9
8
5
6
10
12
4
11
3
9
8
6
10
4
2
1
5
7
+
3
+
3
+
3
+
3
+
3
+
3
+
3
+
3
+
3
+
3
6
12
11
9
13
7
5
4
8
10
3
3
3
3
3
3
3
3
3
3
+
9
+
10
+
7
+
8
+
6
+
4
+
2
+
5
+
1
+
3
12
13
10
11
9
7
5
8
4
6
10
9
5
1
8
6
3
2
4
7
+
3
+
3
+
3
+
3
+
3
+
3
+
3
+
3
+
3
+
3
13
12
8
4
11
9
6
5
7
10
3
3
3
3
3
3
3
3
3
3
+
6
+
7
+
4
+
9
+
10
+
1
+
8
+
3
+
2
+
5
9
10
7
12
13
4
11
6
5
8
Math
3
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