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: ________________
30
+ 28
28
+ 20
58
+ 29
17
+ 62
58
+ 33
75
+ 22
47
+ 24
80
+ 19
88
+ 11
15
+ 45
46
+ 19
73
+ 14
80
+ 12
69
+ 15
40
+ 50
17
+ 44
78
+ 16
37
+ 36
31
+ 50
51
+ 37