Vocabulary
What is a constant? Give an example
a number that stays the same and doesn't change.
Example: 12x+5.
5 is the the constant
if you save $10 each week and already have $15, what expression models your total savings.
10x+15
What does GCF and LCM stand for?
Greatest Common factor and Least Common Multiple.
You have 14 coins, and you want to divide them evenly into groups for saving. What is the greatest number of equal groups you can make if each group must have the same number of coins?
Greatest common factor of 14
What property allows you to multiply each addend separately and add the products?
The Distributive Property
What do we call the biggest number that divides into two or more numbers evenly?
Greatest Common Factor
Write an algebraic expression that represents saving $50 each month for x months
50x
What is the GCF of 24 and 16?
4
You and your friend each save $8 per week. After how many weeks will you both have saved a multiple of $24?
Least common multiple.
after 8 weeks.
Which two expressions listed are equivalent by the Commutative Properties?
A)7x+9. B)3+2y. C)2x+4. D)9+7x
A and D
What are terms that have the same variable and exponent.
Give an example.
Like terms
Example: 2x and 5x
3y and 2y
Simplify the expression 13x + 2x using the properties of operations.
15x
What's the LCM of 9 and 15
45
You earn $7 per week and save half. Write an expression to show how much you save after w weeks.
(1/2)(7x)=
3.5x
Simplify and explain the property used.
3x(2+4)=
3x(2+4)=6+12=18
The Distributive property.
The number that's in front of a variable in a term.
Examples: 3y
3y2
Evaluate the expression 7x + 30 when x = 5.
65
What is the GCF and LCM of 16 and 24
GCF=8
LCM=48
You plan to save $12 per week. Write and simplify an equivalent expression for saving double that amount each week for weeks.
(2)(12x)=
24x
Tom is buying 7 boxes of Cheez-it's and each box cost (2.50+t) dollars, where t is the tax. Write an expression that equivalent that represents the total cost.
17.50+7t