4÷12=
6.5÷100= 4.8×0.1= 5÷7= 0.5×40=
- = + = 0.5+ = 0.75- =
50÷100=
=
4.8+6= 0.8×0.6= 2.4×0.5= 1.25×8=
4.5-0.45= 3÷0.5= 63÷0.9= 1.2÷6=
÷3=
1-0.5=
×24=
+×=
768+199=
0.5÷0.25=
2.3×9+2.3=
2.5×7×4=
1﹣0.01= 5÷8= 12.6﹣7.6﹣0.4= 3y+0.7y= 8.2÷0.01= 35÷0.5= 0.32×99+0.32= 2.9m﹣m=
情况如图。