\(a,\dfrac{5}{4}+\dfrac{3}{8}=\dfrac{10}{8}+\dfrac{3}{8}=\dfrac{13}{8}\)

\(b,\dfrac{2}{3}-\dfrac{3}{8}=\dfrac{16}{24}-\dfrac{9}{24}=\dfrac{7}{24}\)

\(c,\dfrac{5}{7}\times4=\dfrac{20}{7}\)

\(d,\dfrac{9}{11}:\dfrac{2}{7}=\dfrac{9}{11}\times\dfrac{7}{2}=\dfrac{63}{22}\)

\(a,\dfrac{13}{8}b,\dfrac{7}{24}c,\dfrac{20}{7}d,\dfrac{63}{22}\)

a)\(\dfrac{5}{4}+\dfrac{3}{8}=\dfrac{10}{8}+\dfrac{3}{8}=\dfrac{13}{8}\)

b) \(\dfrac{2}{3}-\dfrac{3}{8}=\dfrac{16}{24}-\dfrac{9}{24}=\dfrac{7}{24}\)

c) \(\dfrac{5}{7}\times4=\dfrac{20}{7}\)

d) \(\dfrac{9}{11}\div\dfrac{2}{7}=\dfrac{9}{11}\times\dfrac{7}{2}=\dfrac{63}{22}\)

1D

2A

3C

4A

5C

7C

8B

9ko có đáp án đúng

10A

1A

2A

3A

4A

5D

1A

2D

3C

4A

5D

1A  2D  3C  4A  5D

cíu là chi

1.travelling ( enjoy + Ving)

3. was built ( câu bị động )

2B

3C

4B

Chúc em học tốt

2 B

3 C

4 B

B

C

B

giúp ik làm, van xin cả tuần! 

Câu 1

11/4 - 6/8 = 2

9/5 + 3/4 = 51/20

3/10 x 5/2 = 3/4

2/7 : 5/14 = 4/5

Câu 2

5/6 - x = 2/3

x = 5/6 - 2/3

x = 1/6

4/3 : x = 2

x = 4/3 : 2

x = 2/3

Câu 2: 

a: x=5/6-2/3=5/6-4/6=1/6

b: x=4/3:2=2/3

A

D

A

D

A

D

The water isn't warm enough for me to drink

Homework is easy enough for me to do

He is rich enough to buy the car

She is intelligent enough to become the winner of the competition

Hoa is intelligent enough to become a genius

He isn't tall enough to take that book off the shelf

This shirt isn't cheap enough for me to buy

This dress isn't big enough for me to wear

6,8 (quy luật: 2 số ở bên trái cộng lại trừ đi số ở trên bên phải thì đc số ở dưới bên phải)