0.45×0.2=
4.38+3.5=
86-4.25=
(3.85+5.45)×0=
0.75×1.00=
2.5×4=
5.4×20=
7.85×0.004=
2.74×0.98◯2.74 1.9×0.78◯0.78 4.75×1◯4.75
8.5×15◯85×1.5 86×0.27◯0.27×8.5 6.3×0.98◯6.4×1.04
0.38×0.25= 0.87×1.9=(得数保留两位小数)
150×0.12= 8.5×0.39=(验算)
6.1×10= 6.4+4= 2.8×0.5= 1-0.25=
0.37+0.63= 4.5+100= 0.05×40= 0.52=
3.5×4= 2.5×2= 1.6×0.5= 0.125×0.8=
0.06×0.8= 1.3×0.07= 0.31+0.69= 9-5.3-0.7=
2.3×2= 10×0.2= 1.45×10= 5.98×1000=
2.4×5= 4.5×0.9= 2.5 ×8= 3.9-3=
20×30 0.2×0.3
=(2×10)×(3×10) =(2×0.1)×(3×0.1)
=(2×3)×(10×10) =(2×3)×(0.1×0.1)
=6×100 =6×0.01
=600 =0.06