Sewanhaka High School
Math 8
Name:___________________________________ Per:___
Mrs. Lidowsky, Principal
Mr. Long, Teacher
Date:_________________
H.W. #12: Ditto
DO-NOW #12: Answer the following questions. SHOW WORK:
1) Brian paid $52.00 for a pair of sneakers. A week later, he noticed they were on sale for 30% off. How much
money might he have saved if he bought the sneakers on sale? (NOTE: No sales tax.)
2) Express the following number in scientific notation:
3) Express the quotient of
28,420
3.6 * 10 5
in standard form:
2.842 * 10 4
Topic: Expressions and Equations
Main Idea: Solving One Step Algebraic Equations
Aim:
RECALL
How many pounds are missing from one side of the
dumbbell?
How did you obtain your answer? Develop an
equation for the previous situation with a variable.
What is a variable?
Solve the equation, n + 3 = 6
How do we solve equations that contain addition?
Solve the equation, n – 8 = 19
How do we solve equations that contain
subtraction?
NOTES
Now, I’m at the Gym and I tried lifting 800 lbs
barbell but I got a hernia. To make it easier to lift, I
took off ¼ the weight on one side of the barbell. To
keep it balanced, how much do I have to take off on
the other side?
How many pounds did I take off on each side of the
barbell?
In math, how can I solve the equation: 4c = 800
Check 4c = 800
Write an equation and solve for the variable and
check:
A number divided by 6 is 2:
Drill: Solve and Check
1) 143 = h - 98
SUMMARY:
2) 183 = y + 97
3) 48 = 6t
4)
d
= 61
3