有三個數分別1985、2120和2890,下列敘述何者錯誤?

南一國小數學4下ch4-4

Quiz
•
Mathematics
•
4th Grade
•
Medium
數學 南一
Used 45+ times
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10 questions
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1.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
三個數相加後用無條件進入法取概數到百位是7000
三個數相加後用四捨五入法取概數到百位是7000
三個數相加後用無條件捨去法取概數到十位是6900
以上皆錯誤
2.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
將甲數用四捨五入法取概數到百萬位是73000000,甲數可能是多少?
72511000
72499999
73603256
7399999
3.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
將800800800以四捨五入法取概數到千位是多少?
800801000
800800000
800800
800000000
4.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
將314675202以四捨五入法取概數到千位是多少?
314680000
314675000
314675200
314675
5.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
將804567981以四捨五入法取概數到萬位是多少?
805000000
804600000
804570000
804568000
6.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
將548713596以四捨五入法取概數到萬位是多少?
550000000
549000000
548700000
548710000
7.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
將14796325以四捨五入法取概數到百位是多少?
14796300
14796000
14800000
14700000
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