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# 用“四舍五入”法求近似数 - PowerPoint PPT Presentation

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## PowerPoint Slideshow about '用“四舍五入”法求近似数' - eden-dodson

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150000=（ ）万

42140000=（ ）万

800000元=（ ）万元

1360000平方米=（ ）万平方米

150

4214

80

136

1389000千米

12756千米

12756≈？

1389000≈？

139 万

1

1 ≈

2756

2

138 ≈

9000

144万

144309≈

1726100≈

173万

5199000≈

520万

1843527

2002年中国科技馆共接待观众1843527

18425百

3

5

2

1844千

184万

1674

16737700

7

9079

90793100

3

4677

46769800

6440

64400700

44893700

4489

42879000

4288