OPTIONS:
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>Addition ( + )
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>Subtraction ( - )
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>Subtraction Adv ( - )
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>1
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>2
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>3
addition
Name/名前: ________________
31
+ 62
62
+ 25
79
+ 15
21
+ 23
60
+ 39
72
+ 12
25
+ 43
29
+ 13
40
+ 13
68
+ 19
40
+ 47
22
+ 29
11
+ 53
23
+ 35
20
+ 36
71
+ 14
72
+ 19
17
+ 53
35
+ 50
31
+ 22