P.E.M.D.A.S
What do I do first in this expression?
7(6-4)2
What is inside the parentheses (6-4)
Solve the expression using the correct order of operations!
7(6-4)2
28
Solve the expression using the correct order of operations, show the substitution for the value of the variable. n = 9
1 + 3n
28
What separates terms in algebraic expressions?
addition and subtraction
Write an equation that is equivalent to
2(5x+3)
10x + 6
What is the first thing you do when solving an expression.
Anything inside the parentheses.
Solve the expression using the correct order of operations!
2(3)2 - 5
13
Solve the expression using the correct order of operations, show the substitution for the value of the variable. / signifies a fraction. n = 8
3/4(n) + 5
11
What is the coefficient of a term in an algebraic expression?
What you multiply by the variable.
Create an equivalent expression by combining like terms.
3a + 5 - 2a + 10
a + 15
When you have an expression with just multiplication and division left what do you do first?
You work from left to right and do whichever you read first in the equation.
Solve the expression using the correct order of operations! / signifies a fraction
1/2(10) - 5 + 43
64
Solve the expression using the correct order of operations, show the substitution for the value of the variable. n = 7
7n + 8 - 12
45
How many terms are in the following expression and what are the terms?
7x - 10y + 59
3 terms
7x
10y
59
Check to see if the following expressions are equivalent by substituting 4 for n.
15n + 10 and 5(3n + 2)
Yes they both equal 70
When you have an expression with just addition and subtraction left what do you do first?
You work from left to right and do whichever you read first in the equation.
Solve the expression using the correct order of operations!
2.7 + 5.6 + 3(4.1 - 1.3)
16.7
Solve the expression using the correct order of operations, show the substitution for the value of the variable. x = 3 and y = 9
4x2 + 3y + 9
72
What are the coefficients of the terms in this equation?
3x - 2y - 5z
3
2
5
Write an expression that is equivalent to
9(2n + 5)
18n + 45
Solve the expression. / signifies a fraction
8/2 - 3 + 82
65
Solve the expression using the correct order of operations!
(11 + 32) - (4(10) - 62)
16
Solve the expression using the correct order of operations, show the substitution for the value of the variable. a = 7, b = 6, c = 5, and d = 4
2a + 5b - 3c + d - 12
21
5x + y/3 + 7z + 4w/5
5x coefficient = 5
y/3 = 1/3(y) coefficient = 1/3
7z coefficient = 7
4w/5 = 4/5(w) coefficient = 4/5
Create an equivalent expression by combining like terms.
13w + 7z - 3w + 3z
10w + 10z