五年级数学上册小数乘法简便计算精选 141文档格式.docx

五年级数学上册小数乘法简便计算精选 141文档格式.docx

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4.61×

99＋4.610.319×

1001－0.319

2.4×

250.64×

101

0.05×

7.33×

2002.4×

1005

0.25×

5.31×

4008.7×

8.2＋1.3×

8.2

4.1×

0.91＝______×

250×

（0.54×

0.04）＝（______×

9.3×

5.6＋0.699999999999999×

5.6＝（______＋______）×

0.583×

0.002101×

0.85

8.78×

9＋8.780.565×

10001－0.565

3.2×

2.50.64×

999

0.5×

7.45×

0.22.3×

102

0.025×

3.82×

4009×

7.8＋1×

7.8

2.9×

（0.86×

0.4）＝（______×

1.5×

9.9＋8.5×

9.9＝（______＋______）×

0.693×

5×

0.21001×

0.73

2.37×

99＋2.370.112×

11－0.112

5.6×

0.0250.57×

6.21×

202.4×

7.06×

41.2×

9.7＋8.8×

9.7

8.5×

8.03＝______×

（0.51×

5.7×

8.3＋4.3×

8.3＝（______＋______）×

0.925×

0.04999×

0.91

5.91×

99＋5.910.263×

10001－0.263

3.6×

2500.49×

0.49×

201.3×

6.25×

408.5×

5.1＋1.5×

5.1

3.7×

1.93＝______×

（0.96×

400）＝（______×

7.3＋6.4×

7.3＝（______＋______）×

0.97×

40999×

0.77

4.96×

9999＋4.960.941×

11－0.941

0.4×

0.250.31×

99

1.33×

21.5×

1.05×

0.049.9×

2.6＋.0999********×

2.6

1.8×

1.07＝______×

（0.87×

8.6＋1.5×

8.6＝（______＋______）×

0.205×

4001001×

0.78

3.44×

999＋3.440.981×

1001－0.981

0.8×

0.250.58×

1.38×

202.1×

1004

9.66×

4001.7×

7.3＋8.3×

7.3

8.1×

7.08＝______×

（0.44×

2.3×

7.1＋7.7×

7.1＝（______＋______）×

0.763×

4099×

0.72

1.52×

999＋1.520.934×

11－0.934

6.8×

0.250.81×

1001

1.79×

22.4×

104

6.75×

0.047.6×

5.9＋2.4×

5.9

7.5×

8.08＝______×

（0.43×

6.4×

4.2＋3.6×

4.2＝（______＋______）×

0.079×

1.25×

0.08999×

0.66

5.53×

999＋5.530.172×

11－0.172

2500.33×

1.37×

201.5×

7.41×

4004.9×

8.3＋5.1×

8.3