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Math
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1st Grade
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Missing Addends within 20
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Sheet 3
Missing Addends within 20 — Worksheet 3
Name:
Date:
Missing Addends within 20
What number is missing?
1.
1 +
= 17
2.
2 +
= 15
3.
9 +
= 18
4.
3 +
= 15
5.
7 +
= 12
6.
1 +
= 12
7.
8 +
= 17
8.
15 +
= 18
9.
9 +
= 13
10.
12 +
= 15
11.
1 +
= 15
12.
6 +
= 19
13.
15 +
= 20
14.
10 +
= 14
15.
4 +
= 11
16.
5 +
= 10
17.
11 +
= 19
18.
13 +
= 17
19.
9 +
= 16
20.
4 +
= 10
16
13
9
12
5
11
9
3
4
3
14
13
5
4
7
5
8
4
7
6
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1st Grade · Sheet #3