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