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