4.2×1.994.2÷1.99 0.450.45
0.100.1×0.1 2.5÷52.5 3.2÷1.632÷16
3.6×1.4= 360×1.4= 50.4÷1.4=。
2 8×3.05= 16.88÷2.8≈(得数保留两位小数) 25÷3.3=(得数用循环小数表示)
4.7÷100=
1.6×0.3=
0÷9.4=
2.8×0.5=
4.2÷0.14=
9÷0.08=
0.56÷0.8=
50×2.2=
3.3×6.9=22.77
3.33 ×66.9=222.777
3.333×666.9=
......
88.83÷9=9.87
88.884÷9=9.876
96-69= 0.72+2.8= 0.125×0.8= 0.32÷0.1=
4× ÷4× = 7÷ = 1- =
403×19= -80%= ( - )×12=
687+95= 0.46+4.9=
0.5×2.4= 0.84÷0.7= 2.6× =
1.25× ×8=