Ôn tập Toán tuần 19
Quiz
•
Mathematics
•
5th Grade
•
Practice Problem
•
Medium
Used 4+ times
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10 questions
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1.
MULTIPLE CHOICE QUESTION
45 sec • 1 pt
Diện tích hình thang có đáy lớn a,đáy bé b và chiều cao h (biết a,b,h cùng đơn vị đo ) được tính theo công thức
S = (a + b) x h/2
S = (a + b) + h/2
S = (a + b) : h/2
S = (a + b) - h/2
2.
MULTIPLE CHOICE QUESTION
2 mins • 1 pt
Chu vi hình tròn có đường kính d= 2,5 cm là
15,7cm
7,85cm
78,50cm
7850cm
3.
MULTIPLE CHOICE QUESTION
3 mins • 1 pt
Diện tích hình thang có đáy lớn 3,5cm , đáy bé 1,5 cm và chiều cao gấp đôi đáy bé là:
17,5 cm2
3 cm2
2,5 cm2
7,5 cm2
4.
MULTIPLE CHOICE QUESTION
45 sec • 1 pt
Muốn tính chu vi hình tròn biết bán kính r ta có công thức là
C = r x 3,14
C = r : 3,14
C = r x 2
C = r : 2 x 3,14
5.
MULTIPLE CHOICE QUESTION
2 mins • 1 pt
Chu vi hình tròn có bán kính r = 1/2cm là:
1,57cm
3,14cm
0,785cm
15,7 cm
6.
MULTIPLE CHOICE QUESTION
45 sec • 1 pt
Đường kính hình tròn bằng
d = r x 3,14
d = r x 3,14
d = r x 2
d = r x 2 x 3,14
7.
MULTIPLE CHOICE QUESTION
45 sec • 1 pt
Muốn tính chu vi hình tròn khi biết đường kính d ta làm như sau:
C = d : 2 x 3,14
C = d x 3,14 : 2
C = d : 3,14
C = d x 3,14
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