Expressions
An acronym to define the order of operations when evaluating an expression
What is PEMDAS? (Parentheses, Exponents, Multiplication, Division, Addition, Subtraction)
Part of an expression that is added or subtracted
What is a term?
What is an open sentence?
Add, Sum, plus, increase, total, more than
Subtract, minus, less, difference, decrease, take away, deduct
What are Translating words for addition and subtraction?
Numbers we multiply together to get another number
devices, parentheses, brackets, and fraction bars used to set apart an expression that should be simplified BEFORE other operations are performed
What are grouping symbols?
A combination of variables, numbers, and operations without an equals sign
What is an algebraic expression ( or variable expression)?
Evaluate ac/b if a = 5, b = 2, and c = 10
25
The quotient of 25 times 3 and a number
25/3x
Small keychain plushies sold at events typically go for $5 each, but the organizers charged her $50 to set up her table. Write an expression she can use after the event to calculate her earnings where p is for plushies sold
5p-50
(2/5)2
0.16
Identify the error(s) Taylor made within the following expression
when m = -2 and n = -3
m - 2n + 10
(-2) - 2(-3) + 10
2 -(-6) + 10
8 + 10 = 18
m = -2 and Taylor missed adding the (-) symbol on line 3
2(x-8) > x + 5x
When x = -2
What is False?
Eight more than two times a number is fourteen
2x + 8 = 14
Midnight goes to a store and lost their cash app card. Inside their wallet they have $12 and the tax in Ohio is 8%. Write a math equation midnight could use on their phone to calculate the maximum amount of snack cost they have to work with?
12(1-0.08)
4(2)2-1
15
A term in an expression that includes only numbers, the value of which does not change, compared/verses to the number written alongside a variable in a term
What is the difference between a constant and a coefficient?
Evaluate if a = -9 and c = 5
3(a+c2)
______
12
4
122 is ______ to 99
what is not equal (or greater than)?
Alex has $80. He wants to buy some packs of markers that cost $5 each. After buying the markers, he also wants to save $15 for a future purchase. Write an equation to figure how many packs he could buy with m for markers.
80 - 5p = 15
What is the value of the expression?
3[(30-8)/2+2]
39
Evaluate if x = 5, y = 3, and z = 3
x+(3+y3)
________
10 - z
5
Claire’s bakery sells croissants, muffins, and donuts. The expression 3.5𝑐+4𝑚+2.5𝑑 gives the cost (in dollars) of 𝑐 croissants, 𝑚 muffins, and 𝑑 donuts. Will is having a party and needs to order 10 croissants, 6 muffins, and 12 donuts. What is the total cost of Will’s order?
$89
Pip spent more on armor than Midnight who spent 10 less on their armor before buying 3 bags of taffy additionally on a whim.
Write a true equation, Let x equal the cost of the armor and t for the cost of taffy
x > (x-10) + 3t
Midnight wants to sell masks for $60 each. They want to provide a coupon for 15% off the original price, and there is a sales tax of 7% on the discounted price.
m[60 - (0.15 x 60) x ( 1 + 0.07 )]
Explain what each part of the expression represents
m = masks sold
60 is cost of the mask, 0.15 is 15% off coupon and multiplied to the mask price, 1 + 0.07 gets the coefficient needed to multiple to the new discounted price to calculate sales tax