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100×0.7=

开火车. 0.88. 0.4×0.3=. 0.12. 8.8×0.1=. 0.26. 6.88. 1.3×0.2=. 5.28+1.6=. 2.5×0.6=. 1.5. 100×0.7=. 70. 6.09×0=. 0. 4.6+1.64=. 6.24. 6. 6.28. 10-1.7-2.3=. 3.14×2=. 开火车. 0.2×4= 3×1.3= 2.4×2= 8×0.5= 4×12= 99×0.1=

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100×0.7=

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  1. 开火车 0.88 0.4×0.3= 0.12 8.8×0.1= 0.26. 6.88 1.3×0.2= 5.28+1.6= 2.5×0.6= 1.5 100×0.7= 70 6.09×0= 0 4.6+1.64= 6.24 6 6.28 10-1.7-2.3= 3.14×2=

  2. 开火车 0.2×4= 3×1.3= 2.4×2= 8×0.5= 4×12= 99×0.1= 1×5.42= 0.3×20= 0.7+0.7+0.7= 0.8 3.9 4.8 9.9 4.0 48 5.42 6.0 2.1

  3. 小数乘整数计算方法 小数乘整数时，一般先按整数乘 法计算，再看因数里有几位小数，就 从积的右边起数出几位，并点上小数 点。

  4. 9.6 1、2.4+2.4+2.4+2.4 = 2.4×( ) = ( ) 2、根据56×1.3=72.8，直接写出下面各题的结果。 56×13=( ) 0.56×1.3=( ) 5.6×13=( ) 3、在○里填上＞、＜或＝ 924×0.6○924 1×0.44○0.44 7.3×1.8○7.3 4、两个因数的积是8.45。如果两个因数同时扩大10倍， 则积是（ ）。 4 728 0.728 7.28 ＜ = ＞ 845 填空

  5. 判断 √ 1、0.35×7的积是两位小数。 （ ） 2、48×0.2＞48 （ ） 3、1.25×(0.8＋1) = 1.25×0.8＋1 （ ） 4、两个小数相乘的积一定小于1。 （ ） × × ×

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