《小数乘小数》课前口算题.doc

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1、《小数乘小数》口算题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＝0.02×38＝25×0.4＝1.6×1.5＝0.01×10＝250×0.04＝1.5×0.02＝0.05×12＝200×0.05＝2.5×0.4＝0.05×430＝20×0.5＝250×

2、0.4＝7.682×0＝2×0.005＝2.05×2＝参考答案0.1×208＝2.082.8×2＝5.63×0.18＝0.540.2×600＝1201.3×5＝6.58×0.05＝0.41.3×50＝6580×0.05＝47.26×1＝7.260.4×22＝8.80.15×40＝60.7×1.4＝0.981.25×10＝12.54.5×0.02＝0.090.03×8＝0.240×1.001＝00.8×12.5＝100.4×0.7＝0.281.3×4＝5.21.35×10＝13.51.4×0.4＝0.561.4×5＝71.45×100＝1453.5×40＝1400

3、.02×38＝0.7625×0.4＝101.6×1.5＝2.40.01×10＝0.1250×0.04＝101.5×0.02＝0.030.05×12＝0.6200×0.05＝102.5×0.4＝10.05×430＝21.520×0.5＝10250×0.4＝1007.682×0＝02×0.005＝0.012.05×2＝4.1