四捨五入法是什麼?

南一國小數學4下ch4-5

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Mathematics
•
4th Grade
•
Hard
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1.
FLASHCARD QUESTION
Front
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 QUESTION
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 QUESTION
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 QUESTION
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 QUESTION
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 QUESTION
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 QUESTION
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。
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