Addition Drills (3s) - Math Worksheet With Answer Key Page 17
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20Name:
Addition Drills (3s)
Solve each problem.
1
4
9
3
8
5
2
10
7
6
+
3
+
3
+
3
+
3
+
3
+
3
+
3
+
3
+
3
+
3
4
7
12
6
11
8
5
13
10
9
3
3
3
3
3
3
3
3
3
3
+
1
+
6
+
4
+
7
+
8
+
5
+
9
+
10
+
3
+
2
4
9
7
10
11
8
12
13
6
5
7
9
10
8
6
1
2
5
3
4
+
3
+
3
+
3
+
3
+
3
+
3
+
3
+
3
+
3
+
3
10
12
13
11
9
4
5
8
6
7
3
3
3
3
3
3
3
3
3
3
+
3
+
5
+
2
+
9
+
4
+
6
+
8
+
7
+
10
+
1
6
8
5
12
7
9
11
10
13
4
10
6
8
1
3
2
9
5
4
7
+
3
+
3
+
3
+
3
+
3
+
3
+
3
+
3
+
3
+
3
13
9
11
4
6
5
12
8
7
10
3
3
3
3
3
3
3
3
3
3
+
2
+
8
+
4
+
10
+
1
+
5
+
3
+
9
+
6
+
7
5
11
7
13
4
8
6
12
9
10
6
3
9
7
5
2
1
8
4
10
+
3
+
3
+
3
+
3
+
3
+
3
+
3
+
3
+
3
+
3
9
6
12
10
8
5
4
11
7
13
3
3
3
3
3
3
3
3
3
3
+
6
+
10
+
4
+
9
+
3
+
5
+
1
+
8
+
7
+
2
9
13
7
12
6
8
4
11
10
5
8
2
7
4
10
3
9
6
1
5
+
3
+
3
+
3
+
3
+
3
+
3
+
3
+
3
+
3
+
3
11
5
10
7
13
6
12
9
4
8
3
3
3
3
3
3
3
3
3
3
+
3
+
9
+
8
+
5
+
10
+
6
+
1
+
2
+
7
+
4
6
12
11
8
13
9
4
5
10
7
Math
9
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