3.5+0.8=
3﹣1.6=
0.23÷0.1=
3.14×4=
× =
﹣ =
1﹣ + =
+ × =
13.3+6.7= 12= = 49×101≈
21×50= 12.5×8= 0.72÷0.8= =
3.2+6.8= ×33= 39×101= 0.36÷0.6= 705﹣398≈
-= 3.6÷= 5.4×10%= 0.12= +×3=
47+53= 420÷70= 100-28.5= 0.03×8= 234- 199=
50×80= 2.7÷0.9= = 1÷ =
3.57+1.43= 4.2× =
10-9.2= 0.6×0.6=
0.72÷0.8= 8× ÷8÷ =