五年级数学上册小数乘法简便计算专项练习139Word下载.docx

五年级数学上册小数乘法简便计算专项练习139Word下载.docx

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3.8＋7.8×

3.8

1.1×

6.46＝______×

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0.4）＝（______×

6.2×

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0.167×

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0.41

4.17×

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2.8×

0.250.78×

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0.21.4×

1004

5.63×

42.4×

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3.95＝______×

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0.61×

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401001×

0.83

1.28×

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0.05×

6.59×

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1.8

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8.17＝______×

250×

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5.2＝（______＋______）×

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0.4101×

0.69

6.62×

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4×

2500.38×

999

4.93×

2002.1×

105

1.03×

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7.3＝（______＋______）×

0.703×

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8.2×

0.44.6×

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4.9

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25×

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0.412×

0.82

2.48×

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250.47×

102

4.51×

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5.52×

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5.45×

21.1×

3.03×

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7.27×

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3.9