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
?
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 = - 8 and y = 10
x = 1 and y = 1
x = - 3 and y = 5
Question 7
What is the median number of 4, 2, 8, 7, 4 ?
4
5
8
Question 8
A mountain is 400m high. If you unfold your arm which measures 1 meter, you succeed in hiding it with your hand which measures 0,06m. How far is the mountain?
6,2 kms
6,7 kms
6,9 kms
Question 9
The moon has a diameter of 3000 kms. It is à 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(-1;-2) and B(-3;-4). How much is the lengthAB?
2