580+470=
10﹣8.06=
×4.2=
÷ =
﹣ =
2.8×4=
0.125÷ =
× ÷ =
10﹣5.2=
7÷=
4×0.5=
0.52÷0.42=
48÷0.04=
48×25%=
1÷1%=
3.5+6.45=
657﹣298=
2.4×=
562÷79≈
21×498≈
×4.2= 10.4﹣0.8= 44÷ = 0.11÷0.1=
÷ = 8.7÷29= × = 6×( ﹣ )=
5.34+0.66=
101×30=
0.4+6.0=
+=
5÷0.05=
×=
-=
13÷=
54×=
16.15÷1.7+0.85÷1.7=
199+99×99=
(+++)×=
2.25× +2.75÷1+60%=
99999÷5+9999÷5+999÷5+99÷5+9÷5=
0.24×50=
÷2=
0÷ =
1.5×0.2=
0.63÷0.7=
10%×10=
5.07-2.8= 34÷4= 1- = ∶ =
5.2÷0.04= 1.32+0.8= 8 ÷8= 25+7.5=
51.51÷51= + ÷ = 1.5×2÷1.5×2= 149÷30≈