
Thuy Duong
Authored by Thư Đặng
Mathematics
7th Grade
Used 2+ times

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10 questions
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1.
MULTIPLE CHOICE QUESTION
10 mins • 1 pt
1, Số x12 không bằng số nào trong các số sau đây?
A. x28 : x16
B. x4 . x8
C. x2 . x6
D. (x3)4
2.
MULTIPLE CHOICE QUESTION
2 mins • 1 pt
2, (-1/3)4=
A. 1/81
B. 4/81
C. -1/81
D. -4/81
3.
MULTIPLE CHOICE QUESTION
2 mins • 1 pt
3, Số x mà 2x=(22)3 là:
A. 5
B. 6
C. 26
D. 8
4.
MULTIPLE CHOICE QUESTION
2 mins • 1 pt
4, Chọn đáp án sai:
A. (−2019)0 = 1
B. (0,5)(0.5)2 = 1/2
C. 46 : 44 = 16
D. (−3)3 . (−3)2= (−3)5
5.
MULTIPLE CHOICE QUESTION
2 mins • 1 pt
5, Số 224 viết dưới dạng lũy thừa với số mũ bằng 8 là:
A. 88
B. 98
C. 68
D. Một đáp số khác
6.
MULTIPLE CHOICE QUESTION
2 mins • 1 pt
6, Nếu √x= 3 thì bằng: x2 =
A.3
B.9
C.27
D.81
7.
MULTIPLE CHOICE QUESTION
2 mins • 1 pt
7, Cạnh của bàn cờ vua bằng bao nhiêu, biết bàn cơ vua hình vuông có diện tích bằng 400 cm2?
A.12 cm
B. 20 cm
C. 40 cm
D. 10 cm
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