南一國小數學4下ch4-5

南一國小數學4下ch4-5

Assessment

Flashcard

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Mathematics

4th Grade

Hard

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15 questions

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1.

FLASHCARD

Front

四捨五入法是什麼?

Back

四捨五入法是一種取整數的方法,當數字的下一位數字是5或更大時,將前一位數字加1,否則保持不變。

2.

FLASHCARD

Front

無條件進入法是什麼?

Back

無條件進入法是將數字向上取整到最接近的整數。

3.

FLASHCARD

Front

無條件捨去法是什麼?

Back

無條件捨去法是將數字向下取整到最接近的整數。

4.

FLASHCARD

Front

如何用四捨五入法計算6501元和5999元的差價?

Back

先將6501元四捨五入到百位,得到6500元;5999元四捨五入到百位,得到6000元。差價約為500元。

5.

FLASHCARD

Front

如何用四捨五入法計算2999元和1999元的總價?

Back

將2999元四捨五入到千位,得到3000元;1999元四捨五入到千位,得到2000元。總價約為5000元。

6.

FLASHCARD

Front

如何用無條件捨去法計算342、167和319的總和?

Back

342捨去到百位為300,167捨去到百位為100,319捨去到百位為300。總和為700。

7.

FLASHCARD

Front

如何用無條件進入法計算6231、6359和6128的總和?

Back

6231進入到百位為6300,6359進入到百位為6400,6128進入到百位為6200。總和為18900。

8.

FLASHCARD

Front

如何用四捨五入法計算799元和449元的差價?

Back

799元四捨五入到百位為800元,449元四捨五入到百位為400元。差價約為400元。

9.

FLASHCARD

Front

四捨五入法的應用在哪些情況下最有用?

Back

四捨五入法在估算價格、計算總和和簡化數字時最有用。

10.

FLASHCARD

Front

無條件進入法的應用在哪些情況下最有用?

Back

無條件進入法在需要確保數字不低於某個值的情況下最有用。

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