
數卷檢討
Presentation
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Mathematics
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4th Grade
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Practice Problem
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Hard
葉紹勳 葉紹勳
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39 Slides • 0 Questions
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By 葉紹勳 葉紹勳
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3. 玩具展第一週參觀人數約有579654人。先用四捨五入法取概數到萬位,再計算。
(1)第二週比第一週少12475人,第二週大約有幾人參觀玩具展?
(2)第三週比第一週多15004人,第三週大約有幾人參觀玩具展?
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4. 擬真國有男生35468人、女生28205人,男生和女生大約共有多少人?先分別用四捨五入法取概數到百位,再算算看。
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5. 上個月張太太的收入是52341元,張先生的收入是89723元,兩人上個月的收入大約共有多少元?先分別用四捨五入法取概數到萬位,再算算看。
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1. 124000×56 □ 12400×560
2. 9400×510 □ 940000×51
3. 32000×14 □ 320×140
4. 570800×36 □ 57080×360
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By 葉紹勳 葉紹勳
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