Grade 1 Addition Doubles — Set 1

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easy Set 1
10
+1
3
+5
10
+1
1
+10
3
+11
5
+12
1
+3
2
+5
6
+1
1
+13
3
+4
2
+1
1
+2
9
+10
10
+1
10
+7
2
+1
1
+15
1
+8
10
+3
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