Контрольная работа No3. «Действительные числа. Свойства арифметического квадратного корня»
1 вариант.
1. Вычислите: а) б) 2 , . , (24/0,5). Josyach - 14 ли
,
2. Найдите значение выражения:
г) -
о бо
а) 0,5 0,04 44; 0,25 - 64; б)/56 - 14; в) 31 26
3. Решить уравнения: а) х = 49; б) х = 10.
4. Упростить выражение: а) ху
x
9х, где x = 0;
, где x = 0; б) – 562
4
где
в <0.
2
в
15. Укажите две последовательные десятичные дроби с одним знаком после
запятой, между которыми заключено число 17.
x +1 = 0?
6. Имеет ли корни уравнение
- Are there any fitness clubs in your town?(Yes, there are. There are two fitness clubs in my town.)
- Have you ever gone to a fitness club? (Yes, I have. I have gone to the fitness club several times.)
- Do you do any sports? (Yes, Ido.)
- What sport is it? (It is table tennis.)
- How often, do you go in for sports? (I play table tennis three times a week.)
- Where do you usually play table tennis? (I play table tennis at home and at the school sports ground.)
- What sport is popular in your family? (Skiing, running and playing table tennis are popular in my family.)
- Do you take part in any competition? (Yes, I do. I took part in the school competition two months ago.)
- Have you ever won a prize or medal there? (No, I have not. I haven't won the prize or medal there.)
1)The students asked their teacher if they should have to do some homework.
2)The teacher asked the class if they wanted to do some homework.
3)The class said they would like to do a project on travel.
4)The teacher told the students that they had all passed the exam.
5)One student said to the teacher that he wanted to do a project on Scotland.
6)The teacher asked whether the student had some books about Scotland.
7)The student said he hadn't got any books on Scotland.
8)The teacher told she would bring the student a book the next day.