722的5-1一元一次不等式作業3

Quiz
•
Mathematics
•
7th Grade
•
Medium
葉 冠萱
Used 5+ times
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10 questions
Show all answers
1.
MULTIPLE CHOICE QUESTION
10 mins • 1 pt
下列哪一個稱為「一元一次不等式」?
2x+3≠2x-5
2x+y≠4
x+2y≧4-x
3(x-1)≦1+x
2.
MULTIPLE CHOICE QUESTION
10 mins • 1 pt
下列何者與其他三者意思不同?
a不小於b
a不超過b
a不大於b
a≦b
3.
MULTIPLE CHOICE QUESTION
10 mins • 1 pt
將下面的敘述改寫成不等式,何者錯誤?
7x大於21:7x>21
5x+2y不大於13:5x+2y≦13
4x不小於9:4x>9
6y超過20:6y>20
4.
MULTIPLE CHOICE QUESTION
10 mins • 1 pt
小鋼珠一顆重8克,某聯歡會玩「抓鋼珠,拿獎金」的活動,雙手抓一把小鋼珠,若總重量「大於」1000克為成功,那麼一顆小鋼珠可兌換10元,否則視為失敗。今傑侖共抓了x顆,若要成功,應滿足下列哪一個式子?
8x<1000
8x>1000
8x≦1000
x<1000
5.
MULTIPLE CHOICE QUESTION
10 mins • 1 pt
珠珠身上雖然有佰元鈔票6張,五十元硬幣a個,十元硬幣7個,但她卻買不到980元的紀念錶。根據以上的敘述,可列出下列哪一個不等式?
980<50a+670
980<50a+760
50a+670<980
50a+760<980
6.
MULTIPLE CHOICE QUESTION
10 mins • 1 pt
蘋果一個20元,木瓜一個16元,若兩種水果都買,共買了22個,但總價不超過400元,則依題意可列式為何?(設蘋果買x個)
20x+22 × 16<400
20x+16 × ( 22-x )≦400
( 20+22 ) × 16x≦400
20x+22<400 × ( 16-x )
7.
MULTIPLE CHOICE QUESTION
10 mins • 1 pt
甲、乙、丙三人量體重,甲比乙重10公斤,甲、乙的體重和是丙的2倍。已知甲的體重為z公斤,而且三人的體重和超過150公斤。根據以上的敘述,可列出下列哪一個不等式?
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