
TUẦN 18
Authored by Cúc undefined
Mathematics
1st Grade
Used 1+ times

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76 questions
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1.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Công thức tính diện tích hình tròn là :
S= r x 2 x 3,14
S = r x 3,14
S = d x 3,14
S = r x r x 3,14
2.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Chữ số 3 trong số thập phân 2,36 có giá trị là:
3/10
3/1000
3/100
3
3.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Một hình tròn có đường kính bằng 5 cm. Vậy diện tích của hình tròn là:
196,25 cm2
19,625 cm2
31,4 cm2
78,5 cm2
4.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
5/2 được viết thành số thập phân là:
2,5
0,4
4,0
5,2
5.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Công thức tính diện tích hình tam giác là :
S= a x h
S = a x h : 2
S = a x h x 2
S = (a + h) : 2
6.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Công thức tính đường cao hình tam giác là :
h = S : 2 : a
h = S x 2 x a
h = S x 2 : a
h = S : a
7.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Công thức tính diện tích hình thang là :
S = (a+b ) x h x 2
S= a + b x h : 2
S = (a + b) : 2 x h
S = (a + b) x h : 2
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