Expressions
Give me an example of an expression.
3n+2
Give me an example of an equation.
4n-3=25
You and 5 friends are contributing the same amount of money (m) for a birthday present. Write an algebraic expression for the total amount of money spent on a present.
5m
The difference between expressions and equations is...
An expression is a number, a variable, or a combination of numbers and variables and operation symbols. An equation is made up of two expressions connected by an equal sign.
Write an expression for the following situation: a multiplied by 25
a25
What are the 2 different ways we have learned to solve equations?
1. Guess and Check
2. Reverse Flow Chart
Wanda goes to a painting studio with some friends. The studio charges $20.50 for a small painting and $35.50 for a large painting. Each paint color cost $0.50.
Write an expression on how much it would cost if she ordered a small painting with p number of paint colors.
$20.50 + p= c
A number followed by a variable is understood to be which type of operation?
Multiplication
Evaluate 3n+2 when n= 5
17
Solve for a. 5a+3= 13
a=2
Sara bought m cookies. She shared them with herself and 7 friends. Each friend got 3 cookies. Solve for m.
m/a=3
m=24
A variable is...
An unspecified value often represented using a letter or a symbol
Grade 6: Calculate 4m + 26m − 5
30m-5
Solve for a. 5a+2a-3=25
a=4
The grade 5 class is given 60 minutes to complete a math quiz. Eli's teacher tells the class that they have 20 minutes left. How long has Eli been writing for?
t=38
Grade 6: True or false
You can add 2 monomials together even if they have different variables.
False
Grade 6: 3u + 6u + 12u+ 3
21u+3
Use a reverse flow chart to solve the following equation: a + 50 =102
52
Karen takes a taxi that charges $5.50 flat rate and $2.50 for each km driven. Use an equation to show how much it would cost to travel 7km.
5.50 +2.50(k)
Grade 6: True or false
Monomials with a degree of 1 with the same variables can be added or subtracted.
True