натуральные числа.дроби.процент

натуральные числа.дроби.процент

11th Grade

15 Qs

quiz-placeholder

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натуральные числа.дроби.процент

натуральные числа.дроби.процент

Assessment

Quiz

Mathematics

11th Grade

Medium

Created by

Sevil Ismayilova

Used 15+ times

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15 questions

Show all answers

1.

MULTIPLE CHOICE QUESTION

2 mins • 1 pt

Найдите процентное содержание спирта в смеси ,полученной при смешивании 30 граммов 30%-го и 20 граммов 40%-го раствора.

34%

24%

70%

50%

10%

2.

MULTIPLE CHOICE QUESTION

1 min • 1 pt

Вычислите значение выражения:

 527(815:32)\frac{5}{27}\cdot\left(\frac{81}{5}:\frac{3}{2}\right)  

2

5,8

29

1

3

3.

MULTIPLE CHOICE QUESTION

1 min • 1 pt

Вычислите 25% от 320.

60

40

80

56

160

4.

MULTIPLE CHOICE QUESTION

1 min • 1 pt

Найдите х из пропорции: 0,1:0,02=у:0,8

0,4

4

0,004

40

400

5.

MULTIPLE CHOICE QUESTION

1 min • 1 pt

Найдите х,если

 х2у=35 и у+35=5,22\frac{х-2}{у}=\frac{3}{5}\ и\ \frac{у+3}{5}=\frac{5,2}{2}  

10

4

12

8

6

6.

MULTIPLE CHOICE QUESTION

1 min • 1 pt

Решите уравнение :

 3(257х)=НОД(60;84)3\cdot\left(25-7х\right)=НОД\left(60;84\right)  

7

4

3

15

12

7.

MULTIPLE CHOICE QUESTION

1 min • 1 pt

Решите уравнение:

 НОК(34;51;68)+(877х):6=215НОК\left(34;51;68\right)+\left(87-7х\right):6=215  

2

3

6

7

14

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