小数乘以小数的估算练习题
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小数乘以小数的估算练习题
小数乘法的练习题
一、一般乘法竖式计算题
205×0.18305×0.142.03×0.1310.2×2.3
3.07×0.103
1.07×1.2.01
205×0.10.102
2.4×0.9 0.5
65×0.0.0016
5.8×0.30.65
×0.20.408×0.1.05×3. ×1.72.03×0.10.4×2.
×0.11 0.34×0.1260.32×0.14×0.150.18×4.
0.36×2.×10.65×0.1 0.62×5. ×7.2×0.038.7×0.1
二、乘数中间有“0”的乘法
56.2×4.0.02×3.6125×2.03.5×1.02
2.5×20.18.81×1.01 19.1×0.3072.01×1.03
518×3.070.131×202.15×1.02.42×1.05
1.25×8.081.02×2.151.02×20.6
三、积末尾有“0”的乘法
18.6×1..06×0.22.8×0.162.36×0.35
1.25×8.80.24×2.50.025×1 1.05×35
1.6×0.0.35×8.0.25×2. 0.15×2.8
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一、计算题 1、直接写出得数。 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
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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、用竖式计算
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×
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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、脱式计算
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
4.8×100.17.09×10.8,0.8×7.09
12.5×0.4×2.5× 0.87×3.16+4.64
0.6?× 1.25
40.? 0.81 × 0.184.×
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6.81+6.81×9 0.25×185×40
4.8+ 0.3? 1..5×101 17.-.×.42.13.×0.×8254.4×0.8,3.4×0..×
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