Предмет: Математика, автор: tychinskayadd333

Средний возраст 25 учеников 5 класса – 11 лет. Когда один мальчик перешёл в другой класс, средний возраст класса стал равен
11(целых)11/24
.

Сколько лет ушедшему мальчику? В ответе напишите только число.

Ответы

Автор ответа: Удачник66
0

Ответ:

0

Пошаговое объяснение:

Сумма возрастов 25 учеников была 25*11 = 275 лет.

Сумма возрастов оставшихся 24 учеников стала

(11 11/24)*24 = 276/24*24 = 275 лет

Получается, что ушедшему ученику 0 лет, то есть он новорожденный.

Очевидно, в задаче ошибка.

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 to read                                   sport

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to do                                         hands 

 

b) Complete the sentences with the word combinations.

 1. When the friends meet they,thay __________  __________.

 2. When will you _________  _________? - On Christmas Eve.We bought new colourful balls yestarday.

 3. Do you __________   _________? - Yes.i like running and riding my bike.

 4. In Deceber people _________  _________ to their  friends  to congratulate with New Year and Christmas. 

 

 

2. Complete the sentences.Circle the right letter.            

 

1 His collection consists ... coins from different counteres.

 a) from b) of c) in

 2 There is a large skating rink ... the centre of the park every winter.

 a) win b) at c)to

  3 ... the 25th of December the British people celebrate Christmas.

  a) In b) At c) On

 4What holiday do thay have .... October?- Hallowen.

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 5 After Oxford the friends left... London,didn`t thay?

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  6) The old man  came into the room,took ... his coat and sat in the armshair.

 a) off b) down c) out 

 

3 Complete the sentences.Fill in:an,is,are.

1   Where is Ann?- In the living room.She____  arranging flowers in the vase.

 2 Why___ William crying?- He can`t find his ball.

 3 What _____ you doing?-Sh-sh!It`s a surpruse.

 4 The children ____ decorating the room for the Ney Year party .Will you help them?

 5 Who____ singing?-My sister. 

 

 

4 Make up sentences.

1. the/doing/now/What/are/students/? -        __________________

 2. Kerry/cake/Christmas/making/is/. -           ___________________

 3 now/not/doing/They/are/homework/their/. -  _________________

 4 it/Is/snowing/now/?  - ______________

 5 he/Why/reading/is/book/that/? - _________________                                                                           

 

 

 5. Copmlete the dialodgue.Use the Present Simple and the Present Contunuous.  

   

   

    Betty: Oh,what a funny photo!When diid take it?

    Ben:Last year,at my  shool`s new Year Eve party.

   Betty: Who is playing  the guitar? (play)

   Ben: Duncan.He often  _________ the guitar at the parties.(play) He can play the guitar very well.

   Betty: What ________ the girls __________? (do)

  Ben:They________ an old English snig.(sing) The girls perform on our Shool 

Theatre.Look! Jim and Ann _______ (dance) They are good dancers.

They________ in our Shool Dancing Club.(dance)

   Betty: I see.And what do you after classes?

   Ben: I like taking photos.Do you like my photo?

   Betty:It`s great!

 

 

                                    Заранее спасибо!)

   

Предмет: Математика, автор: 12345678271