a) 4+2/5=22/5

b) 5/4+2=13/4

c) 3+3/2=9/2

d) 3/4-1/8=5/8

e) 17/15-7/10=13/30

g) 25/12-15/8=5/24

h) 5-4/3=11/3

i)15/4-3=3/4

a)\(\dfrac{4}{1}+\dfrac{2}{5}=\dfrac{20}{5}+\dfrac{2}{5}=\dfrac{22}{5}\)

b)\(\dfrac{5}{4}+\dfrac{2}{1}=\dfrac{5}{4}+\dfrac{8}{4}=\dfrac{13}{4}\)

c)\(\dfrac{3}{1}+\dfrac{3}{2}=\dfrac{6}{2}+\dfrac{3}{2}=\dfrac{9}{2}\)

d)\(\dfrac{3}{4}-\dfrac{1}{8}=\dfrac{6}{8}-\dfrac{1}{8}=\dfrac{5}{8}\)

e)\(\dfrac{17}{15}-\dfrac{7}{10}=\dfrac{34}{30}-\dfrac{21}{30}=\dfrac{13}{30}\)

g)\(\dfrac{25}{12}-\dfrac{15}{8}=\dfrac{50}{24}-\dfrac{45}{24}=\dfrac{5}{24}\)

h)\(\dfrac{5}{1}-\dfrac{4}{3}=\dfrac{15}{3}-\dfrac{4}{3}=\dfrac{11}{3}\)

i)\(\dfrac{15}{4}-\dfrac{3}{1}=\dfrac{15}{4}-\dfrac{12}{4}=\dfrac{3}{4}\)

ưdaswawdawas

3/4,

:v á à thk Nam

sits / reads / goes/ watches/ brushes/ listens/ walks/ fixes/ hears /plays /studies/ repeats 

1. sits

2. reads

3. goes

4. watches

5. brushes

6. listens

7. walks

8. fixes

9. hears

10. plays

11. studies

12. repeats

tự làm đi 

Unit 17/ Lesson 2 / 4:

1./    90 000 dong                                                 

2./    73 000 dong

3./    80 000 dong

4./    95 000 dong

Lời giải chi tiết:

January
February

March

April

May

June

July

August

September

October

November

December

Tháng 1 = January

Tháng 2 = February

Tháng 3 = March

Thử thách tháng 7: Mùa hè sôi động - Điểm cộng kiến thức

1. Which feature makes Kangaroos become Australia national symbol?

A. Kangaroos can't move backward.B. There are a lot of kangaroos in Australia.C. Kangaroos have excellent hearing and keen eyesight.D. Many people in Australia love them.

2. When is Independence Day in the United States of America?A. July 7thB. July 4thC. July 14thD. July 17th

3. The capital of Australia is ___.A. SydneyB. MelbourneC. CanberraD. Newcastle

4. What does "Freedom of speech" mean?A. The right to speak in any languagesB. The right to learn any foreign languagesC. The right to express yourself publicly with the government interferingD. The right to express any opinions without censorship or restraint

5. How many countries are there in the United Kingdom?A. 3 B. 4 C. 5 D. 6

6. These days are ______ / Can't let them slip away / I can't _____ this moment / But I can still go out and seize this day.A. previous - freezeB. precious - freeC. previous - freeD. precious - freeze

7. What is the capital of Northern Ireland?A. LondonB. BelfastC. EdinburghD. Cardiff

8. Which word has the same meaning with "independence"?A. FreedomB. RelianceC. DependD. Undependable

9. Which fairy tale is the cartoon "Frozen" based on?A. Snow White and The Seven DwarfsB. The Snow QueenC. The Snow MaidenD. The Snow Princess

10. What is the cartoon "Moana" about?A. The adventure of Moana, a girl from a Polynesian village.B. The childhood of Moana, a Polynesian girl.C. The friendship between Moana and her friends.D. The environmental duty of Moana. 

nhanh nha mình đang cần gấp 

Chỉ cần ghi đáp án là đc rồi

Mr. Huong is a doctor.

M.r Huong is a doctor