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①45+36=
②52-28=
③56+39=
④85-67=
⑤46+25+17=
⑥85-37-18=
⑦58+41-39=
⑧79-(24+30)=
①58+27=
②72-43=
③25+36+17=
④80-19-37=
⑤53+28-39=
⑥16+(64-48)=
98-20= 9+40= 80-17=
36+30= 8+54= 44+8=
35+30+5= 48-6-4= 32+40-12=
80-9+10= 91-8-60= 42+8+40=
①82+9-53=
②89-34-18=
③90-36+15=
④28+37-16=
⑤12+48+36=
⑥45-19+18=
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