Предмет: Математика, автор: Evaviktoriya

Упростить выражение -(5х-5)-(-(3-6))+13
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Автор ответа: hsh6wba
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Ответ:

-(5х-5)-(-(3-6))+13 = (-5х+5)-(+3)+13 = -5х+15

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Control test


5th class


I. Read the text and say if the sentence is true or false.


Hello, my name is Helen Brown. Only yesterday I was nine and today I’m ten because today is my birthday. And I’m glad that today is Sunday and not Monday or Friday because on Sundays I don’t go to school. But my school friends are coming to my birthday party. It’s 1 o’clock now and my birthday party begins at 2 o’clock. But my friend Kate will come at 3. She and her parents went to see Kate’s grandmother. I already got my present from my parents. It wasn’t a dress like last year or a CD player like the one they gave my brother for his birthday. It’s a bicycle. I like to ride my bicycle. I also like to read. I know that my school friends will give me books with some of my favourite stories. I like books better than videos or music.


The girl’s name is Mary Brown


She is nine


She doesn’t like to go to school.


Her birthday party begins at 2 o’clock


Her friends didn’t come to her birthday party, because they were at school.


Her parents’ present was a CD player


Helen likes to ride her bicycle.


She likes books better than videos or music.


III. Match the parts of expressions.


To feel in a) tricks


To wash off b) fireworks


To get c) paths


To be cautious of d) danger


To pick up e) presents


To rake f) stranger


To light g) permission


To wrap h) graffiti


To do i) leaves


To sweep j) garbage



II. Fill in “at”, “in” or “on” as in the example.


… midnight


… 1984


… June 26th


… Monday


… Easter


…10 o’clock


… winter


… noon


. … morning


… Sunday afternoon



IV. Fill in the gaps with the right form of the verb from the brackets.


They usually (to go) to the river for a swim.


a) go b) goes c) goed


She (to play) the violin now.


a) plays b) playing c) is playing


You (to come) to my place next Sunday?


a) will come b) come c) came


He (to read) a newspaper when I (to come) in.


a) read, was coming b) was reading, came c) read, came


You (to do) your homework from eight till ten yesterday?


a) Did you do… b) You did… c) Were you doing…


They (to pass) their driving test yet?


a) Have they passed b) Do they pass c) Has they passed


John Gray (to visit) Russia in 1989 and (not to be) here since that time.


a) visited, weren`t b) visits, isn`t c) visited, hasn`t been


I (to meet) him when he (to walk) across the park.


a) met, was walking b) meet, walks c) meet, were walking


She (to leave) in a few days.


a) leaves b) is leaving c) will leave


We (to take part) in the competitions next year.


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I (to play) tennis since I was four.


a) play b) have played c) played


I think we (to visit) the Tower of London next holidays.


a) will visit b) is visiting c) is going to visit
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