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