72+28=
2×=
34.6﹣12.8=
600÷20=
1.23×0.4=
÷3=
×15=
1+2%=
+ × =
2- =
×75%=
×4× =
×9÷ ×9=
÷= ×= 1.02﹣0.43= 597×8≈
126÷3= 0.25×0.8= 1÷25%= 725÷92≈
1﹣35%= 6.5×20%= 1.5÷= =
4.25+5.75=
10﹣0.01=
0.8×0.4=
105×4=
27+68=
× =
72÷ =
6.3+0.1=
398×5≈
538÷9≈