Sprawdzian - równania

Sprawdzian - równania

7th - 9th Grade

15 Qs

quiz-placeholder

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Sprawdzian - równania

Sprawdzian - równania

Assessment

Quiz

Mathematics

7th - 9th Grade

Practice Problem

Hard

Created by

Ania Kukla

Used 66+ times

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15 questions

Show all answers

1.

MULTIPLE CHOICE QUESTION

3 mins • 1 pt

Za cyrkiel i ekierkę Ewa zapłaciła 4,80 zł. Cyrkiel był dwa razy droższy od ekierki. Jeśli literą x oznaczymy cenę ekierki, to:

3x=4,80

2x=x+4,80

x+2=4,80

2x+x=4,80-2x

2.

MULTIPLE CHOICE QUESTION

3 mins • 1 pt

Wskaż równanie tożsamościowe:

32x=3x(5x3)3-2x=3x-(5x-3)

2x=32x-2x=3-2x

2x=2x2x=-2x

2x+6=x+62x+6=x+6

3.

MULTIPLE CHOICE QUESTION

3 mins • 1 pt

Rozwiązaniem równania 2x+15=12x+15=1  jest liczba:

7

8

-7

-8

4.

MULTIPLE CHOICE QUESTION

3 mins • 1 pt

Liczba 9 spełnia równanie:

5x+3=4x+65x+3=4x+6

x=15(x+6)−x=15−(x+6)

2x (x7)=x (x5)2x\ (x−7)=x\ (x−5)

2(x3)=3x72(x−3)=3x−7

5.

MULTIPLE CHOICE QUESTION

3 mins • 1 pt

Wskaż równanie sprzeczne:

2x+6=2x−2x+6=−2x

5x4=3x(42x)5x−4=3x−(4−2x)

10x=10x−10x=10x

x+3=2x+3x+3=−2x+3

6.

FILL IN THE BLANK QUESTION

3 mins • 1 pt

Liczbę y zmniejszono o 25% i otrzymano 57. Zapisz odpowiednie równanie.

7.

FILL IN THE BLANK QUESTION

3 mins • 1 pt

Liczbę y zmniejszono o 25% i otrzymano 57.

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