LLG
Advanced Math and Science Pilot Class
Mathematics, Grade 10
2013 – 2014
Paris – Abu Dhabi
Test 2 : Powers – 45 minutes
Care of your work : 1 mark
Exercise 1 : (4 marks) Each correct answer will bring you 1 mark, while a wrong answer will deduce au of a point
from your final mark. Not answering to a question will not affect your final score.
1.
(a)
(b)
(c)
(d)
(e) (
2.
(a)
(b)
(c)
(d)
(e)
3. We can say that
(a) For any real number
(
) :
(b) For only one real number
4. The scientific notation of
(a)
(b)
is :
(c)
(c) Never
)
(d) For four different real numbers
(d)
Exercise 2 : (3 marks) For each following number, say wether it’s positive or negative. Justify your answer. Do not
calculate the result.
( )
( )
Exercise 3 : (5 marks) Give the scientific notation of the following numbers (write the steps of your calculation) :
(
(
)
)
Exercise 4 : (4 marks)
(a) Give the decimal form of the following numbers (write the steps of your calculation) :
(
)
(b) Write the following number as a product of powers of 2 and 5 only : C =
Exercise 5 : (3 marks)
10 grains of sand represent a volume of
. On a beach of
wide and
long, the depth of the sand
is
. Give an estimation for the number of grains of sand on that beach. Give the scientific notation of the
result.