五年级数学上册小数乘法简便计算精选 51文档格式.docx

五年级数学上册小数乘法简便计算精选 51文档格式.docx

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10001－0.397

8×

2500.96×

98

0.05×

8.57×

22.4×

103

1×

0.047.3×

8.7＋2.7×

8.7

4.8×

8.32＝______×

25×

（0.8×

4.1×

6.6＋5.9×

6.6＝（______＋______）×

0.276×

12.5×

81001×

0.98

6.23×

9999＋6.230.447×

10001－0.447

6.4×

250.71×

998

0.5×

4.87×

201.3×

1002

2.5×

6.03×

0.40.2×

6.9＋9.8×

6.9

9.2×

0.07＝______×

250×

40）＝（______×

2.1×

1.3＋7.9×

1.3＝（______＋______）×

0.384×

0.25×

0.0499×

0.99

7.54×

9＋7.540.931×

1001－0.931

6×

2500.24×

102

5.52×

21.5×

4.59×

4001.3×

3.4＋8.7×

3.4

9.1×

6.87＝______×

（0.81×

0.04）＝（______×

8.1×

9.7＋1.9×

9.7＝（______＋______）×

0.099×

50×

0.21001×

0.18

1.54×

9999＋1.540.783×

101－0.783

1.2×

0.250.22×

4.71×

21.2×

1004

0.24×

0.044.8×

7.8＋5.2×

7.8

9.9×

2.99＝______×

（0.61×

0.4）＝（______×

7.4×

7.2＋2.6×

7.2＝（______＋______）×

0.029×

0.19

1.35×

999＋1.350.819×

1001－0.819

2×

2.50.25×

999

5.98×

202.1×

1001

5.1×

4001.6×

6.5＋8.4×

6.5

5.4×

0.26＝______×

（0.65×

8.3×

9.7＋1.7×

0.017×

500×

0.0299×

0.89

4.12×

99＋4.120.216×

101－0.216

4×

250.12×

4.09×

0.022.1×

0.042.6×

6.6＋7.4×

6.6

1.4×

7.71＝______×

（0.71×

4.3×

3.9＋5.7×

3.9＝（______＋______）×

0.904×

4001001×

0.47

5.22×

9999＋5.220.657×

1001－0.657

5.6×

2.50.46×

0.01×

0.21.2×

3.38×

41.2×

4.1＋8.8×

4.1

6.58＝______×

（0.52×

2.1＋8.8×

2.1＝（______＋______）×

0.309×

0.65

2.21×

9＋2.210.367×

10001－0.367

1.6×

250.77×

101

9.54×

1003

3.8×

41.8×

7.8＋8.2×

5.7×

2.28＝______×

（0.36×

1.3×

4.3＋8.7×

4.3＝（______＋______）×

0.789×

0.96

8.18×

9＋8.180.376×

10001－0.376

2500.21×

7.76×

22.5×

105

4.54×

43.6×

1.1＋6.4×

1.1