小数乘法简便计算精选一线教师 倾情奉献 1文档格式.docx

小数乘法简便计算精选一线教师 倾情奉献 1文档格式.docx

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999＋3.270.177×

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1.2×

2500.49×

999

0.5×

5.01×

202.2×

1001

2.5×

0.62×

0.42.4×

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6.61×

99＋6.610.298×

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7.6×

250.57×

5.6×

2001.5×

1002

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0.789×

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2.48×

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250.33×

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102

2.98×

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6.18×

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101

5.93×

2001.3×

105

9.89×

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5.27×

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