Grade 1 Addition Doubles Plus One — Set 21

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easy Set 21
3
+2
10
+8
10
+5
3
+2
2
+2
3
+15
2
+10
10
+1
6
+12
6
+11
2
+10
1
+3
10
+3
2
+17
1
+4
2
+15
3
+13
6
+10
5
+2
2
+13
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