LIÊN HỆ GIỮA THỨ TỰ VÀ PHÉP NHÂN

Quiz
•
Mathematics
•
8th Grade
•
Medium
Hà Phạm
Used 17+ times
FREE Resource
10 questions
Show all answers
1.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Cho 3a > 2a. Vậy a là số nào dưới đây?
a < 0
a = 0
a > 0
a ≥ 0
2.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Cho - 5a > - 3a. Vậy a là số nào dưới đây?
a < 0
a = 0
a > 0
a ≥ 0
3.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Điền cụm từ thích hợp vào chỗ chấm:
" Khi nhân cả hai vế của bất đẳng thức với cùng một số...(1).. ta được bất đẳng thức..(2).. với bất đẳng thức đã cho"
(1) - dương; (2) - ngược chiều
(1) - dương; (2) - cùng chiều
(1) - âm; (2) - cùng chiều
(1) - âm; (2) - bằng nhau
4.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Cho a > b và c > 0, chọn kết luận ĐÚNG
A. ac > bc
B. ac > 0
C. ac bc
D. bc ac
5.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Hãy chọn câu đúng : Nếu a > b thì :
A. -3a-1 > -3b-1
B. -3(a-1) < -3(b-1)
C. -3(a-1) > -3(b-1)
D. 3(a-1) < 3(b-1)
6.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Cho a > b và c > 0, chọn kết luận ĐÚNG
A. ac > bc
B. ac > 0
C. ac bc
D. bc ac
7.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Hãy chọn câu đúng. Nếu a > b thì :
A. -3a+1 > -3b+1
B. -3a < -3b
C. 3a < 3b
D.3(a-1) < 3(b-1)
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