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× = 20÷ = - = ÷ =
÷ = - = 1÷ = 5× ÷5× =
① × ÷
② × ÷
③2020×
④ ÷ ×
⑤ ÷ + ×
⑥( - + )×36
① ÷35
② ÷ ÷
③3× ÷
④(14- )÷
⑤ ÷( + )
⑥( - )×
⑦ + ×
⑧1- ÷
⑨ ÷5÷
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