Предмет: Математика, автор: yxhcgxhx

сравните пожалуйста....50а и 5га; 78a и 7800 м в квадрате;40 а и 4000 м в квадрате ;26 га и 260а; 6а 50 м в квадрате и 700 м в квадрате; 3га 90а и 400 а

Ответы

Автор ответа: lenchik2281
2
ГЕКТАР (га) = 100 АРОВ 

50 а меньше 5 га

100 кв. м = 1 а
78а = 7800 м в квадрате

26 га =260 а 
 6 а  50 м в квадрате меньше 700м в квадрате

3 га 90 а меньше 400а

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Tasks for self-study



Task 1. Complete with the words in brackets. Choose just, already, yet, ever, never, for, since.



1 Don´t forget to phone Alice. 'I have__________ phoned her. (yet, already, ever)

2 Have you seen him anywhere? 'Yes, I have _________ seen him in the kitchen' (just,already,ever)

3 I have___________been to Japan. What about you? (yet, never, ever)

4 Has Ann just phoned? 'Yes, she has__________phoned' (ever, yet, just)

5 Why don't you read that paper? 'I have ________ read it' (yet, already, just)

6 Has it stopped snowing? 'No, it hasn't stopped snowing _________ '

(just, yet, already)

7 Sandra has studied French _______ May. She speaks very fluently. (for, since, yet)

8 Have you _______travelled to space? 'Of course not' (never, since, ever)

9 Poor man... he has ________had a girlfriend in his life! (ever, never, yet)

10 It hasn´t rained _______ three months (since, for, ever)

11 I haven't told my parents about my failure ________ (ever, just, yet)

12 Would you like a sandwich? 'No, thanks. I have ________had lunch.' (just, yet,ever)



Task 2. These are sentences from real conversations. Put in the question tags.



1 I'm cooking tonight, ____________________ ?

2 He's not a baby, ____________________ ?

3 It'll be all right, ____________________ ?

4 Laura's still got short hair, ____________________ ?

5 She doesn't feel well, ____________________ ?



Task 3. Put the words in brackets in the right order to make inversions.



1 (Never/I/meet) ____________________ such well-behaved children before. They are as good as gold.

2 (No sooner/my father/sit down) ____________________to dinner than there was a knock on the door.

3 (Little/he/know) ____________________ that his culinary skills are quite substandard.

4 (At no time/mean) ____________________ to hurt your feelings. It was all a big misunderstanding.

5(Seldom/we/have) ____________________ friends over for a drink. We prefer to meet them at pubs or restaurants.

6 (Not only/he/make) ____________________ a mean cheesecake, but he also prepares homemade jam.

7 Only when the situation gets out of hand____________________ (the government/begin) to act

8 Not until June____________________ (you/can/get) all the swimming gear out of the drawers.



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