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révisions 1 3danube 2022

Authored by fabienne reveillon

Mathematics

3rd Grade

Used 1+ times

révisions 1 3danube 2022
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24 questions

Show all answers

1.

MULTIPLE SELECT QUESTION

30 sec • 1 pt

quels sont les nombres premiers ?

12

17

9

43

2.

MULTIPLE SELECT QUESTION

20 sec • 1 pt

quels sont les diviseurs de 39 ?

3

13

1

2

3.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

la décomposition en produit de facteurs premiers de 30 est

2 x 15

3 x 10

2 x 3 x 5

1 x 30

4.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

le développement de 3x (2x−7) 3x\ \left(2x-7\right)\  est

3x×(−5x)3x\times\left(-5x\right)  

6x2+216x^2+21  

6x2−216x^2-21  

−15x2-15x^2  

5.

MULTIPLE SELECT QUESTION

1 min • 1 pt

le développement de (3x+5)(2x−7) \left(3x+5\right)\left(2x-7\right)\  est

8x×(−5x)8x\times\left(-5x\right)  

6x2−21x+10x−356x^2-21x+10x-35  

6x2−31x−356x^2-31x-35   

6x2−11x−356x^2-11x-35  

6.

MULTIPLE CHOICE QUESTION

1 min • 1 pt

le développement de (6x−2)(10x−7)\left(6x-2\right)\left(10x-7\right)  est

4x × 3x4x\ \times\ 3x  

16x2−62x−916x^2-62x-9  

60x2−22x+1460x^2-22x+14  

60x2−62x+1460x^2-62x+14  

7.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

l'image de 3 par la fonction f : x →2x(x−5)f\ :\ x\ \rightarrow2x\left(x-5\right)   est

-10

-12

-46

21

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