1.8×2.4=
1.8×0.24=
0.18×0.24=
180×0.24=
3.5×0.993.5
23.2×0.90.9
2.76×1.521.52
4.25×1.14.25
1×0.440.44
7.1×0.547.1×5.4
3.12×0.5=×
6.9×4.5+3.1×4.5=(+)×4.5
0.25×7.8×4=7.8×(×)
0.8×0.5=
0.9×5=
8×0.06=
0.05×1.6=
4.3+5.7=
0.01×7.2=
100×0.7=
0.28×10=
8.8×0.1=
8.65×0=
2.5×8=
1.2-0.9=
42×5.4 =
1.08×25=
0.25×0.046≈(保留两位小数)
0.12×0.44≈(精确到十分位)