Means putting numbers where letters are (the variables)
What is Variable Substitution
100
Write the original equation: How many packages of diapers can you buy with $40 if one package costs $8?
8d = 40
100
A symbol of a number that we don't know yet. It is usually a letter like x or y.
What is Variable.
100
Rewrite in exponent form:
2 x 2 x 2 x 2 x 2 x 2 x 2 x 2 x 2
2^9 (2 to the ninth power)
200
Solve for the missing variable:
13.2 = p/6.9
p = 91.08
200
"Like terms" are terms whose variables (and their exponents such as the 2 in x2) are the same. In other words, terms that are "like" each other.
What is Combining Like Terms
200
Write the original equation: Lisa is cooking muffins. The recipe calls for 7 cups of sugar. She has already put in 2 cups. How many more cups does she need to put in?
n + 2 = 7
200
The Arabic word which means reduction or balancing.
What is Al-Jabr
200
Write an expression from the following phrase:
Fifty-five minus a number m.
55 - m
300
n - 1 2/5 = 4/5
n = 2 1/5
300
When you can swap the numbers when adding or multiplying and get the same result
What is Commutative Property
300
Write the original equation: Jenny wants to buy an MP3 player that costs $30.98. How much change does she receive if she gives the cashier $40?
n + 30.98 = 40
or (in reality) 40 - 30.98 = change
300
A number on its own. Sometimes shown as a letter. It is a fixed number.
What is Constant
300
Evaluate when x = 5, y = 2, and z = 3:
x + 15 - z
17
400
Solve for the missing variable
m/9.5 - 50.5 = 11.5
m = 589
400
Lets you multiply a sum by multiplying each addend separately and then add the products.
What is the Distributive Property
400
Write the original equation: After paying $5.12 for a salad, Michael has $27.10. How much money did he have before buying the salad?
m - 5.12 = 27.10
400
A number used to multiply a variable; variables with no number have this as a value of 1.
What is Coefficient
400
Simplify the expression:
8(12x + x + 5)
104x + 40
500
Solve for the missing variable
y/4 + 1/2 = 3 3/4
y = 13
500
Grouping (parenthesis) numbers with addition or multiplication will still yield the same result.
What is the Associative Property
500
Write the original equation: If the weight of a package is multiplied by 5/7 the result is 40.5 pounds. Find the weight of the package.
5/7m = 40.5
500
To calculate the value of
Evaluate
500
Simplify the expression:
a(a + b - c + d - e) + ab