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