Writing/Reading Equations
What expression represents 3 increased by F?
3+ F
Evaluate 8n+2 when n=6
50
Can you rearrange subtracted terms like 5H - 3?
NO!! ONLY ADDITION AND MULTIPLICATION
4x+x+2y+ y+ y
5x + 4y
What is a variable?
A letter that represents an unknown number.
What expression represents 4 times the sum of a number and 8?
4(S + 8) or 4 X (S+8)
Evaluate when E=6
1/2E +10
13
Select a like term for 3x.
A. 3m
B. 2B
C. 12x
D. 3x2
C
The variable and power must match.
Simplify
9y - 2 + 4y
13y - 2
What is a constant?
A number that is alone/ by itself
Which represents 9n-7
A. Nine less than 7 times a number
B. Seven less than nine times a number
B
Evaluate when b=10 and h=14
1/2bh
1/2 times 10 times 14
70
Using Distributive Property simplify
7(9x + 4y)
63x + 28y
Simplify
3(a+4b)
3a +12b
What is a coefficient?
A number multiplied a variable/ next to a variable
Which expression best represents the phrase
"the quotient of x plus 6 and 2"
(x+6) divide 2
2(xdividey)^3+z
Evaluate when x=72 y=24 and z=12
66
A rectangle has a length x + 2 inches and a width of 3 inches. The expression 3(x+2) inches squared represents the area of the rectangle. Using distributive property what is an equivalent expression?
3x+6
Simplify
3(p + 4m) - m - m - m
3p + 9m
How many terms are in the expression
5x + 6^3 - 2x + 3
4 terms
Which expression represents 8 less than twice the sum of number, x and 2?
2(x+2)-8
Evaluate when x=4, and y=2
3x^2 + 5xy^2 + y^2
132
A teacher writes the expression 3(6m+3). Xavier said the answer is 18m + 9. Is Xavier correct?
YES! Good job Xavier :)
Which Expression is Equivalent to 24x - 108?
A. 4(6x-27)
B. 24(x-108)
C. 2(12x- 108)
D. 9(15x-12)
A
How is an expression different than an equation?
An equation has an equal sign.
An expression does not have equal sign.