5÷9= 0.25×8= 23=
①
②
③
④
10÷2.5= 2.4×0.5= -0.25=
+ = + = + = + =
- = - = - = 1- =
1.75+3.25= 1.25×8= 12-5.4=
9.6÷0.3= 0.5x+0.5x= 0.08×1.1=
0.23×50= a×a= 0.33=