Download Math Test Review – Multiples, factors, prime and composites

Math Test Review – Multiples, factors, prime and composites
Do first question and create 2 more similar questions
1. List the first 10 multiples of each number and identify the
Lowest Common Multiple
a) 5: _______________________________________
7: _______________________________________
b)
______________________________________________________
______________________________________________________
c)
______________________________________________________
______________________________________________________
2. Identify all the factors for each number
a) 24 (1, 2, 3, 4, 6, 8, 12, 24)
b)
c)
3. Identify each number as being prime or composite.
A prime number has only two factors (one and itself).
A composite number has 3 or more factors.
a) 17 – Prime
b) 20 – Composite
c)
d)
4. Create a factor tree or repeated division for the following
numbers
I can’t really show how to do a factor tree on the computer
properly show please check the website (Nelson Math) for
examples.
a)
20
4
2
5
or
2- 20
2- 10
5
2
b)
c)
5. Write each number as a product of prime numbers.
a) 27 = 3 x 3 x 3 (You would do a factor tree or repeated division
to find the answer to this question.)
b)
c)
6. Problem Solving: Remember to use the steps for problem
solving.
Steps for Problem Solving
1. Read or write problem.
2. List facts:
3. Question: Write the question in your own words to demonstrate
you UNDERSTAND the problem. I need to figure out . . .
4. Strategy: Make a plan
5. Solve: Do the work.
6. Look Back: Check you work by making sure you are on the
right track.
7. Conclusion: Write answer in a full sentence.
a. If Declan has a basketball practice every second day and
Cheyenne has a dance practice every 3rd day. What day do they
have a practice on the same day?
b) Jason is baking cookies and he would like to think about all the
different arrays he can make with the cookies. He has 20 cookies.
How many different arrays can he make?