2.5×40=
+ =
3.4× =
0.2÷ =
5- =
×60=
÷ =
×25%=
﹣ = + = 0.25+ = ﹣ = 4×2.5=
0×98.56= 45×11= 0.85﹣15%= 0.65×101﹣0.65=
×10÷ ×10=