Vocabulary
What is the name for a symbol which works as a placeholder for expressions or quantities that may vary or change?
Examples: x , y , z , a
Variable
If x = 4 , find the value of x + 6
10
The following words (sum and more) are used to describe which operation?
Addition
Simplify the expression by combining like terms:
5x + 2x - 3x
4x
Simplify the expression by using the distributive property:
5 ( x + 2)
5x + 10
What is the name for a number that does NOT have a variable next to it?
Example: 9 , -2 , 7
Constant
If y = 5 , find the value of 2y - 1
9
The following word (difference) is used to describe which operation?
Subtraction
Simplify the expression by combining like terms:
8x + 2y + 2x - 5y
10x - 3y
Simplify the expression by using the distributive property:
-4(a + 2) + 2b
-4a - 8 + 2b
Name the variable in the expression below:
-5x2 + 15
x2
4x - 2y + 4 when x = 2 and y =5
2
There are h horses on a farm. The farmer gains 9 more horses. Write an expression for the total number of horses.
h + 9
Simplify the expression by combining like terms:
x - 15y + 21x - 6y
22x - 21y
Simplify the expression by using the distributive property and combining like terms:
-5( a - 6 ) + 2a
-3a + 30
Name the coefficients in the expression below:
6x - 3y + 9
6 and -3
2m2 - 3n + 1 when m= -2 and n= 1
6
There are c cookies to be shared equally among 8 friends. Write an expression for how many cookies each friend gets.
c / 8
Simplify the expression by combining like terms:
3x2 - 7x - 9x2 + 5 + 2x - 6
-6x2 - 5x - 1
Simplify the expression by using the distributive property and combining like terms:
5 ( 2y + 7 ) + 4 ( y - 1 )
14y + 31