Multiples and Factors
What is a prime factor?
A prime factor is a number that is only divisible by 1 and itself.
What is the greatest common factor of 12 and 15?
3
How do you express 2 x 2 x 2 in exponent form?
2^3
Give the correct order of operations.
BEDMAS: Brackets, Exponents, Multiplication OR Division, Addition OR Subtraction
A square photo frame has an area of 121 square inches. What is the length of one side of the frame?
11 inches
What are the factors of 20?
1,2,4,5,10,20
What is the greatest common factor of 24 and 20?
4
Solve √49 =
7
Solve: (5 x 4) – 6 ÷ 2 + 9
26
Maya wants to buy two cook books and one picture book. One cook book costs $9 and the picture book costs $12. Which expression can you use to find out how much money she needs?
a) 9 + 12 b) (12 x 2)+9 c) (9 x 2)+12
C)
True or False: 4 is a factor of 48
True
What is the least common multiple of 2, 3, and 5?
30
Solve 6^3
216
The problem was 20 - 5 x 2 + 3. My answer was 33. What did I do wrong? What is the correct answer?
I went from left to right without using the correct order of operations. The correct answer is 13.
You bring snacks for your basketball team every fifth game. Every third game is a home game. When will be the first time that you bring snacks to a home game?
15th game
18,36,54,72,90
What is the great common factor of 50, 35, and 15?
5
Solve. (perfect square of 7) + (the perfect square of 3+) =
49 + 9 = 58
12 + 22 x 32 - 42
21
Johnny baked 36 oatmeal cookies and 48 chocolate chip cookies to package in plastic containers for his teacher friends at school. He wants to divide the cookies into identical containers so that each container has the same number of each kind of cookie. If he wants each container to have the greatest number of cookies possible, how many plastic containers does he need?
12 plastic containers
What are the first 5 multiples of 106?
106,212,318,424,530
What is the least common multiple of 21 and 24?
168
Explain why we call it a "Perfect Square." Be specific and give an example!
When finding the area of a square, you multiply length times width. In a square, all four sides are equal. Therefore, when you find the area of a perfect square, you are multiplying the same number by itself.
Solve: 9÷ 3 + 2(9+10) - 8 + 4 x 3
45
Marissa's mom offered her three different options for her weekly allowance. Her three options are: A. √36 x 22 dollars a week B. √9 x √121 dollars a week C. √169 x 2 dollars a week How much would she make with each option? Which option should she chose? Explain your work.
She should chose option B because she would earn $33 a week (√9 = 3, √121 = 11, and 3 x 11 = 33). If she chose option A, she would only make $24 dollars (√36 = 6, 2^2 = 4, and 6 x 4 = 24), and if she chose option C, she would only make $26 a week (√169 = 13, and 13 x 2 = 26).