小數(shù)乘除法簡便練習(xí)題

小數(shù)乘除法簡便練習(xí)題班級___________姓名______________

2.5×7.1×16.12×99＋16.125.2×0.9＋0.9.3×50×0.2

0.75×1990.86×15.7－0.86×14.0.25×3.2÷3.5

7.28×99+7.226×15.7＋15.7×24

8.05×3.4+7.×3.32×25

4.8×100.1.09×10.8－0.8×7.09

0.9÷×1.9.5×99.8

1.2×÷4.832＋4.9－0.12.5×0.4×2.5×84.×1.8－4.8×0.5×0.279×343＋0.657×27.×17.-.×.4

五上小數(shù)乘除法簡便運算專項練習(xí)題

班級___________姓名______________

2.5×.8×299..5×1.25×0.320.125×72

0.25×39+0.256.8×0.75÷0.28×0.56＋44×0.412.5×56

13.5×0.12.5×8.5.7×0.28＋6.3×0.28－0.28×2

9.5×9.16×1.53－0.053×91..9÷4.2÷3.5

15÷3.4÷2.5÷0..6－3.6×0.7×0.8

40.÷0.81×0.184.4×0.8－3.4×0.×．5

2

小數(shù)乘法簡便計算練習(xí)題

班級姓名

小數(shù)乘法的簡便計算的方法：

1、乘法交換律與結(jié)合律、分配率的運用。

2、表面上看來，左右兩邊沒有相同的因數(shù)，不能使用乘法分配律。我們可以通過變一變，分一分的方法找出相同因數(shù)再運用乘法分配律進(jìn)行計算

0.25×8.5×412.5×0.96×0.0.25×0.73×4.36×12.5×8

0.25×16.2×41.25×2.5×323.2×0.25×12.0.25×36

×8.8×10.1.6×100.39×199

0.32×4033.65×10.10.85×9.93.72×3.5＋6.28×3.5

15.6×2.1－15.6×1.1.8×7.8＋78×0.56.5×99＋56.5

7.09×10.8－0.8×7.091.87×9.9＋0.184.2×99＋4.2

3.8×4.56＋3.83×5.449.7×99＋9.7.5×3.7－7.5×3.7

3.14×0.68＋31.4×0.0327.2×0.2＋2.4×1.45.4×11-5.4

7.74×＋1.5×2.2.9×2.7＋3.9×7.12.7×9.9＋1.27

2.3×16+2.3×23+2.33.65×4.－36.5×0.37101×0.87-0.91×87

46×57＋23×810.7×16.1-15.1×10..6×0.8＋0.2×7.6

1.28×8.6＋0.72×8.10.6×0.35－9.6×0.38.9×1.010.65×101

48×0.56＋44×0.40.279×343＋0.657×2790.264×519＋264×0.481

9.16×1.53－0.053×91.0.125×912.5×10.8×0.25

45×21－50×2.145×1.58＋5.5×15.825×7.3×0.4

一、計算題1、直接寫出得數(shù)。0.45×2.5＝0.8×1.25＝0.3×3.6＝0.3×0.3＝10×0.07＝0.3×1.4＝0.05×7＝0.92×0.4＝0.2×0.26＝0.14×4＝0.02×0.1＝1.2×0.3＝0.2×0.4＝.2＋1.＝100－35.22＝.3×4＝.5×0.4＝.4×5＝0.22×4＝.25×0＝0.9－0.52＝.99×1＝0×3.52=12.5×4÷10=

10-1.8-7.2=0.43+3.57=.5×4×12=0.9×0.8=

1.05×100=1÷0.5=0.96÷3=1.47÷0.7=5.4÷6=0.16.5×10=0.6×0.8

=

0.56×100=3×0.9=

3.78×100=2.5×0.4=

4÷0.8=3.6×0.4=

3.215×100=0.8×10=.08×100=1.1×0.=12.5×8=0×0.04=0×0.=1.1×9=

0.16×﹦1.78＋2.=.6÷0.=1.2×0.5-0.=0.7÷0.01=2.5×0.=12－3.9=1.25×8÷1.2=6.6÷0.6=.37×0+4.6=.9＋2.03＝.2÷3.5＝1.6+2.4×0.=.14－0.9＝27＋456＋73=0.3×0.3=7.2＋2.8＝0.9÷0.01＝12÷0.3=.87÷0.7＝

13÷4＝0.96÷0.3＝1.5×0.4＝÷0.25＝.5×0.7×0.8=8－2.5＝16÷1.6＝5.6×1.01=

8×＝0.36＋0.64＝64.32÷16＝.2÷0.1＝72.8÷0.8＝.4÷4.2＝13.8＋9.9＝.4×2.5＝0.05×0.8＝2.56－0.37＝1.25×0.8×0.5＝12×2.5＝1.23×3＝3.2÷1.6＝3.5＋3.5×3＝19.6÷2＝.8÷2.2=0.75×4＝×4＝0.5×0.8=8.4×0.2=1.6×0.2＝.2×0.3=2.8×0.3＝0.9÷0.15=1.8×0.4=.5÷0.55=0.08×100=2.2÷0.11=.46＋4.54=

12.5×0.8=0.35×0.3=1.4×5=.8×4=19.6÷4=22.5×4=

2、用豎式計算

0.396÷1.2=0.756÷0.36=15.6×13=

0.18×15=0.025×14=.06×36=

0.04×0.12＝.15×22

16.9÷0.13

13.76×0.8=

6.4×0.5

3.84×2.6≈.1.55÷3.95.2×0.64.48×0..76×3＝0.20.0168.4×1.5.25×5

90.75÷3.68×3.7×

35.4×4.0.042×0.540.76×0.32

0.25×0.0462.52×3.1.08×25

0.12×0.5×0.16＝.8×0.25＝

2.5÷0.7=

10.75÷12.5=

0.125×1.4≈10.1÷3.3=9.04=3.25×

3、脫式計算

2.5×7.1×16.12×99＋16.125.2×0.9＋0.9

7.28×99+7.28

26×15.7＋15.7×24

3.94+34.3×0.2

8.9×1.1×4.7

8.05×3.4+7.6

4.3×50×0.64－2.64×0.×0.2.7×5.4×3.1.2×÷4.8

6.58×4.5×0.93.6×9.85-5.4.8×0.5+1.584.8－4.8×0.5

32＋4.9－0.×86.5×99＋56.5

4.8×100.17.09×10.8－0.8