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Mathematics Rounding and Estimation Worksheet

Authored by 郭恩齊 郭恩齊

English

5th Grade

Mathematics Rounding and Estimation Worksheet
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10 questions

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1.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

將 735162 用四捨五入法取概數到萬位,得到的概數是 740000。

正確

錯誤

2.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

把 24638 分別用無條件捨去法和四捨五入法取概數到百位,得到的結果都一樣。

3.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

7249 用四捨五入法取概數到百位,和 7240 用四捨五入法取概數到百位的結果相同。

正確

錯誤

4.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

一支雨傘 239 元,4 支雨傘的總價錢用四捨五入法取概數到百位,大約是 1000 元。

5.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

將 38512 用四捨五入法取概數到百位是

38500

38600

38000

6.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

將 865432 用四捨五入法取概數到千位,是由哪一個數字決定要不要進 1 到千位?

6

5

4

3

7.

MULTIPLE SELECT QUESTION

30 sec • 1 pt

有一臺按摩椅的定價是 85348 元,分別用無條件捨去法、無條件進入法和四捨五入法取概數到千位來當售價,哪一種方法取得的概數對消費者最有利?

無條件捨去法

無條件進入法

四捨五入法

都一樣

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