219,75:42=5,2321

1:15,5=0,0645

105,45:47,3=2,2293

219,75 : 42 = 293/56

1 : 15,5 = 2/31

105,45 : 47,3 = 2109/946

1 người ăn hết số gạo đó trong số ngày là :    20 x 120 = 2400 ( ngày )

Số người ăn hết số gạo đó trong 15 ngày là :    2400 : 15 =  160 ( người )

Số người đến thêm là :     160 - 120 = 40 ( người )

                                       Đ/s : 40 người

có đến thêm có số người là

120x20:15-120=40(người)

Đ/S40người

1,175 tấn + 295 kg + 17,25 tạ = 319,5 yến

1,175 tấn + 295 kg + 17,25 tạ = 290,295 yến

Khi em 10 tuổi thì anh:

10 x 2 = 20 ( tuổi )

Khi anh 20 tuổi thì em:

20 : 2 = 10 ( tuổi )

Đ/S: 10 tuổi

Tuổi anh là :

 10 x 2 = 20 ( tuổi )

Khi anh 20 tuổi thì em có số tuổi là :

   20 - 10 = 10 ( tuổi )

1. I am lucky to have a teacher you. You are a fabulous guide. Happy Vietnamese Teachers' Day!

2. Without you, we would have been lost. Thank you, teacher, for guiding us, inspiring us and making us what we are today. Happy Vietnamese Teachers' Day!

3. I was lucky to have a teacher as wonderful as you are. Wishing you a Vietnamese Teachers' Day that’s full of joyous moments!

4. Thank you for teaching me how to read and write, for guiding me to distinguish between what is wrong and what is right. For allowing me to dream and soar as a kite, thank you for being my friend, mentor and light.

5. Dear teacher, thanks for supporting and enlightening all my way. Have a wonderful Vietnamese Teachers' Day!

6. The world's best teacher

The way you teach

The knowledge you share

The care you take

The love you shower

Makes you

The world's best teacher

Happy Vietnamese Teachers' Day!

7. A Teacher is

A Teacher is

Someone who is wise

Who cares about the students and wears no disguise

But is honest and open and shares from the heart

Not just lessons from books, but life where you are

A teacher takes time to help and tutor

With english or math or on a computer

It's (Teacher' name) who's patient, even in stress

Who never gives less than the very best!

Not that I was the perfect student, but you were the perfect teacher for me!

Happy Vietnamese Teachers' Day!

8. It is not only on November 20th that I remember you. For me, every day is November 20th. I wish you would be happy forever and be proud of your students. Happy Vietnamese Teachers' Day!

In many countries, Teacher's Day are intended to be special days for the appreciation of teachers, and may include celebrations to honor them for their special contributions in a parular field area, or the community in general. The day on which Teacher's Day is celebrated varies from country to country. Teacher's Days are distinct from World Teacher's Day which is officially celebrated across the world on October 5".  ~From Wikipedia.

In Vietnam, Teacher's Day ( was also renamed Vietnamese Educator's Day since 1982), has long been choosen officially a special day to express the tradition of "respecting the teacher and treasuring the morality". During this holiday, the students from everywhere in Viet Nam, also others from abroad, preparing special presents to honor their Teachers and to welcome Teacher's Day. Decorating class with special accessories, competiting to get more and more good marks, building the more exciting atmosphere of studying, and flower especially  is the most popular activities and gifts prepared by students and pupils. Beside that, students usually gather in groups, then they go to their teacher's house to celebrate their teacher. That's is great time, when both teachers and their students can talk and confide together, to be closer and more familiar. 

Be a student, I want to give my grateful attitude to all great Teachers generally in Viet Nam, and parularly in Hellochao, for the significant distributions that You have been teached and given to us. Wish You good strength and success. We all appreciate what You did, You do and You will do.

2 lần tổng số tiền thưởng của 3 người là 200000+150000+150000=500000

Tổng số tiền của 3 người là 500000:2=250000

Cô Yên được thưởng 25000-150000=100000

Cô Thuận được thưởng 250000-200000=50000

Cô Hiền được thưởng 250000-150000=100000

0,856 m = 85,6 cm  

5,75 m = 575 cm

0,856 m = 85,6 cm

5,75 m = 575 cm

Số người ăn thực tế là : 120.50:30=200 người

Số người ăn thêm là: 200 - 120 = 80 người 

Số người thực ăn : 120 : 30 x 50 = 200 ( người )

Số người tăng là :   200 - 120 = 80 ( người )

                                             Đ/S:......................

205 cm = 2,05 m

8 km 50 m = 8,05 km

12 ha = 0,12 km2

3 m2 130 cm2 = 3,13 m2

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