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①48+36=
②72-19=
③43+27=
④64-18+25 =
⑤90-25-27 =
⑥71-(51-6)=
36+2= 5×3= 4×4= 1×6=
4×5= 56+34= 100-58= 47-28=
56-28= 80-54= 2×7= 3×6=
5×5= 2×6-6= 46-37+24=
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