×27
×0.32+0.68÷
÷〔 ×(1﹣ )〕
32×25×1.25.
( )
①16+4÷( - )
②1.7+3.98+2.3
③( + )× +
④1÷
⑤4.8×3.9+6.1×4.8
①
②
③
④
⑤
⑥
①
②
③ ÷( )
④78×
⑤
⑥( )×2.4
①3.6÷4+7.4× -25%=
②( + )×15×17=
③403×101=12.5×32×2.5=
④99× + =
⑤16.78-3.4-4 =
①21÷0.5÷0.6
②125×88
③2.5×32×12.5
④
⑤
⑥61×40%+38× +0.4