小数乘小数的乘法口算练习.doc

小数乘小数的乘法
口算：
0.6×0.8=3×0.9=2.5×0.4=3.6×0.4=12.5×8=50×0.04=80×0.3=1.1×9=
0.1×208＝2.8×2＝3×0.18＝0.2×600＝
1.3×5＝8×0.05＝1.3×50＝80×0.05＝
7.26×1＝0.4×22＝0.15×40＝0.7×1.4＝
1.25×10＝4.5×0.02＝0.03×8＝0×1.001＝
0.8×12.5＝0.4×0.7＝1.3×4＝1.35×10＝
1.4×0.4＝1.4×5＝

1.45×100＝3.5×40＝5.4×10=4.2×1000=
10×0.6＝6.03×1000＝0.15×7＝0.1×0.1＝
0.24×0.5＝6.45×0.01＝5.4＋3.6＝1.25－0.25＝
10.2×4.5＝2.5×6＝0.6×0.15＝9×0.25＝6.5×10=0.56×100=3.78×100=215×100=
0.8×10=4.08×100=1.5×4=2.5×4=
0.13×4=2.4-0.8=0.125×4＝
2.5－2.5×0.1＝1.25×8×0.5＝
7.7×9.9+7.7=