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Vocabulary
Write Expressions
Evaluate Expressions
Solve Equations
Mystery
100
A letter used to represent a number is called a
variable
100
Write the expression: Add 4 to x
x + 4
100
Evaluate y + 2 when y=9
11
100
Solve for p 5p = 25
p = 5
100
Complete the inequality with =, >, or < When b = 9 then, b + 2 _______ 15
<
200
An expression which contains variables is called an
algebraic expression
200
Write the expression: Subtract x from 8
8 - x
200
Evaluate y - 5 when y = 9
4
200
Solve for p 3p - 4 = 8
p = 4
200
Complete the inequality with =, >, or < when b = 9 2b + 8 _________ 3b - 4
>
300
When two expressions are compared using > or <, the whole statement is an
inequality
300
Write the expression: Multiply x by 7
7x
300
Evaluate the expression 9y when y = 9
81
300
Solve for p 2p + 6 = 4p - 10
p = 8
300
Complete the inequality with =, <, or > when b = 9 (b divided by 3) x 6 __________ 26
=
400
If two expressions have the same value, the whole statement is an
equation
400
Write the expression: Divide x by 2
_x_ 2
400
Evaluate _y_ when y = 9 9
1
400
Solve for p 10p - 4 = 8p + 16
p = 10
400
At a parade, there are m women and 3 times as many men as women. There are 6,352 fewer children than men. a. Find the number of men and the number of children in terms of m. b. If m = 7,145, how many total people (men, women, and children) are at the parade?
a. men: 3m children: 3m - 6,352 b. 43,663
500
To find the value of the variable that will make an equation true is to _____________ the equation.
solve
500
Write the expression: Subtract 7 from x and then divide by 3
_x - 7__ 3
500
Evaluate the expression 5y + 5 when y = 9
50
500
Solve for n 10n + 6 = 15n - 9
n = 3
500
Andy has 3r - 3 baseball cards. Micah has 2r + 5 baseball cards. a. If r = 14, who has more cards? (Andy or Micah?) b. For what value of r will the two boys have the same number of cards? (Hint: set the expression for Andy and the Micah equal to each other and solve for r)
a. Andy b. When r = 8 the two boys will have the same number of cards