
Đề Kiểm Tra Toán Lớp 8
Quiz
•
Mathematics
•
8th Grade
•
Practice Problem
•
Hard
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32 questions
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1.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Câu 1: Phân tích đa thức x² + 5x + 6 thành nhân tử:
(x + 2)(x + 3)
(x - 2)(x - 3)
(x + 1)(x + 6)
(x + 2)(x - 3)
2.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Câu 2: Tính giá trị biểu thức: (x - 3)² tại x = 5:
4
2
1
16
3.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Câu 3: Biểu thức rút gọn của (2x - 3)² là:
4x² - 12x + 9
4x² + 9
4x² + 6x + 9
4x² - 6x + 9
4.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Câu 4: Diện tích hình thang có đáy lớn 10cm, đáy bé 6cm và chiều cao 5cm là:
40cm²
80cm²
25cm²
50cm²
5.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Câu 5: Công thức tính diện tích hình bình hành là:
đáy × chiều cao
cạnh × cạnh
nửa đáy × chiều cao
chu vi × chiều cao
6.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Câu 6: Phân tích đa thức x² - 9 thành nhân tử:
(x - 3)(x + 3)
(x - 9)(x + 1)
(x - 3)²
(x + 3)²
7.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Câu 7: Cho tam giác ABC vuông tại A, biết AB = 6cm, AC = 8cm. Độ dài BC là:
10cm
12cm
14cm
8cm
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