Số thực
Authored by Việt Vĩ
Mathematics
7th Grade
Used 1+ times
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30 questions
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1.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Cho A = 3 và B = √10. Khẳng định đúng là:
A> B
A < B
A = B
A ≤ B
2.
MULTIPLE CHOICE QUESTION
30 sec • 10 pts
Giá trị của ∣-25+11∣-∣-3∣ là:
11
17
33
39
3.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
so sánh
<
>
=
Answer explanation
7>5 nên căn 7 cũng lớn hơn căn 5
4.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
so sánh
<
>
=
Answer explanation
Vì 0 < 1 nên 19,110 < 19,111 nên –19,11 > –19,(1)
5.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
so sánh
>
<
=
Answer explanation
vì trị tuyệt đối của -5 bằng 5
trị tuyệt đối của 3 bằng 3
6.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
điền đáp án đúng
∈
∉
⊂
Answer explanation
vì Q là tập hợp số hữu tỉ
( là những số viết được dưới dạng a/b)
vd 2/3, 25/100, 0.25, ....
thử bấm máy tính xem giá trị của căn 3 là bn
7.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
so sánh
>
<
=
Answer explanation
3 = căn 9
vì 9>6 nên căn 9 > căn 6
suy ra 3> căn 6
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