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CỘNG TRỪ SỐ HỮU TỈ

Authored by Minh Phạm

Mathematics

7th Grade

10 Questions

Used 60+ times

CỘNG TRỪ SỐ HỮU TỈ
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1.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

Câu 1: Tập hợp số hữu tỉ kí hiệu là:

N

N*

Z

Q

2.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

Câu 2: Tìm x biết :  x12=23x-\frac{1}{2}=\frac{-2}{3}  

 16\frac{-1}{6}  

 76\frac{-7}{6}  

 16\frac{1}{6}  

 56\frac{-5}{6}  

3.

MULTIPLE CHOICE QUESTION

45 sec • 1 pt

Câu 3: Tính  8181527\frac{-8}{18}-\frac{15}{27}  

 19\frac{1}{9}  

-1

1

 19\frac{-1}{9}  

4.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

Câu 4: Tìm x biết  47x=13\frac{4}{7}-x=\frac{1}{3}  

 1921\frac{19}{21}  

 521\frac{-5}{21}  

 521\frac{5}{21}  

 1921\frac{-19}{21}  

5.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

Câu 5: Tính  13(0,4)\frac{1}{3}-\left(-0,4\right)  

 115\frac{-1}{15}  

 15\frac{1}{5}  

 1115\frac{11}{15}  

 1130-\frac{11}{30}  

6.

MULTIPLE CHOICE QUESTION

1 min • 1 pt

Câu 6: Tính  23[74(12+38)]\frac{2}{3}-\left[\frac{-7}{4}-\left(\frac{1}{2}+\frac{3}{8}\right)\right]  

 7924\frac{79}{24}  

 23\frac{2}{3}  

 524\frac{-5}{24}  

 3724\frac{37}{24}  

7.

MULTIPLE CHOICE QUESTION

1 min • 1 pt

Câu 7: Tìm x biết  (x+15)32=14\left(x+\frac{1}{5}\right)-\frac{-3}{2}=\frac{1}{4}  

 3120\frac{31}{20}  

 2920\frac{-29}{20}  

 3920\frac{39}{20}  

 2120\frac{-21}{20}  

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