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math
Grade 8

Final test of the 8th Grade




Good luck!


Question 1
How much is ?


Question 2
What do you find when you factorize ?


Question 3
What are the solutions of the ininequality ?
x > -4 x < -4 x < 4

Question 4
How is called a function written ?
An exponential function An affine function A linear function

Question 5
What do you find if you write with only one square root the number ?
0

Question 6
What are the solutions of the system ?
x = - 3 and y = - 3 x = 1 and y = 2 x = 2 and y = 3

Question 7
What is the median number of 6, 2, 1, 4, 12 ?
1 4 5

Question 8
A mountain is 500m high. If you unfold your arm which measures 1 meter, you succeed in hiding it with your hand which measures 0,08m. How far is the mountain?
3,33 kms 5,5 kms 6,25 kms

Question 9
The moon has a diameter of 3000 kms. It is 384000 kms away from us. In which angle can we see it when it's full (we admit that we can draw a rectangular triangle until the moon)?
0,45 0,5 0,55

Question 10
In a mark, we have A(2;3) and B(5;9). How much is the length AB?

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