① ÷[( ﹣0.75)×60%]
②50%×2.5× ×64
③1 +4×0.75
④( )
①98+2550÷25×15=
②36÷ +36÷ =
③ ×[ ÷( ﹣ )]=
有多少朵?
15×60= 640÷40= ÷ = 398÷202≈ 6.9÷0.1=
1.05-0.65= 0.8×125%= 5- = ÷6= 910-430=