8.9×1.58.9 2.8÷0.92.8
8.74÷0.978.74×0.97 7.5÷0.257.5×4
3.6×1.4= 360×1.4= 50.4÷1.4=。
0.100.1×0.1 2.5÷52.5 3.2÷1.632÷16
0.8×2.5=
0.8×0.6=
6.3+0.9=
10-0.36=
0.48÷0.8=
0.4÷0.01=
1.25×8=
70×0.8=
0.35÷0.7=
0.1×0.4=
(得数保留一位小数)
3.2÷0.01= 2.2×9.9= 305-199=
2.05×4= 8×12.5%=