75×12﹣848÷4 [-(-)]÷ 9.24÷[1.5×(0.9﹣0.7)]
0.53+0.47=
25×40%=
①2.65×1.7+7.35×1.7
②36×( + )
③54.2- +4.8-1
④0.7÷[( - )×24]
①
②
③
④
803-207= ÷5= 798+150= + =
0.25×8= 1.5- = 7.5÷ = 0.77+0.3=
9.8-8= × = 45.54÷45= 24× =