1.02× 0.750.75 1.53÷0.01153×100
4.5÷1.24 78.5×0.9978.5×(1-0.1)
①(3618÷18-145)×20
②6÷ - ÷6
③(21+ )× +
④ ×[ ÷( - )]
⑤3.5×98+35×0.2
1÷0.25= 15×60= 72×25%=
1.1-0.01= 12÷ =
24×( )=