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345-30=
315
Oops!
Okay!
349+218=
567
Oops!
Okay!
127+30=
157
Oops!
Okay!
10+13+8+2=
33
Oops!
Okay!
632-20=
612
Oops!
Okay!
349+20=
369
Oops!
Okay!
999-10=
989
Oops!
Okay!
171+20=
191
Oops!
Okay!
188 -20
168
Oops!
Okay!
597+100=
697
Oops!
Okay!
198+10=
208
Oops!
Okay!
419+40=
459
Oops!
Okay!
673+20=
693
Oops!
Okay!
876-100=
776
Oops!
Okay!
309-10=
299
Oops!
Okay!
603-10=
593
Oops!
Okay!
171+30=
201
Oops!
Okay!
742-9=
733
Oops!
Okay!
742-50=
692
Oops!
Okay!
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