正負數的乘除與四則運算
Quiz
•
Mathematics
•
7th Grade
•
Practice Problem
•
Medium
陳 嘉卿
Used 789+ times
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10 questions
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1.
MULTIPLE CHOICE QUESTION
1 min • 1 pt
(-2)×|-1+3|-5=?
-13
-9
3
1
2.
MULTIPLE CHOICE QUESTION
1 min • 1 pt
36÷[(-4)+2]=?
6
18
-6
-18
3.
MULTIPLE CHOICE QUESTION
1 min • 1 pt
(-8)×(-2)+(-61)×0=?
0
16
25
-55
4.
MULTIPLE CHOICE QUESTION
2 mins • 1 pt
999×(-7)=?
7000
-7000
-6983
-6993
5.
MULTIPLE CHOICE QUESTION
2 mins • 1 pt
下列算式何者正確?
48÷8×(-2)=48÷〔8×(-2)〕
48÷8÷(-2)=48÷〔8÷(-2)〕
(48÷8)×(-2)=48÷〔8×(-2)〕
48×8÷(-2)=48×〔8÷(-2)〕
6.
MULTIPLE SELECT QUESTION
2 mins • 1 pt
關於正負數四則運算的過程,正確的有哪些?
(-40)÷8×5=(-40)÷40=-1
8×(-20)÷(-10)=(-160)÷(-10)=16
50-2×(-75)÷|(-15)-10|=50+150÷25=200÷25=8
7.
MULTIPLE CHOICE QUESTION
2 mins • 1 pt
已知a、b為任意數,且a×b>0,則下列敘述何者正確?
當a>0時,b<0
當a<0時,b>0
當b<0時,a<0
當b<0時,a>0
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