①80-37=
②56+37=
③56+30-9=
④71-46+23=
⑤100-(36+58)=
⑥90-(50-28)=
59-5=
72-9=
15+15+15=
62+8=
46-16=
70-(30+15)=
72-30=
46+30=
76-26+18=
55+8=
72-12=
19+(21-18)=
67+12=
78-45=
80-24=
89-46+25=
86-34-12=
53-0=
83-23=
16+48=
60+21=
35+25=
①88÷9 =
②47÷5=
③35÷7=
④40÷6=