Expressions & Equations
Percent Increase
Percent Decrease
Sales Tax
Super Secret Surprise
100
Mrs. Goetz ran x miles. Mrs. Miles ran 5/7 more miles than Mrs. Goetz. What expression represents how far Mrs. Miles ran?
A. 6/7x
B. x + 5/7x
C. 5/7x
D. x + 6/7x
B. x + 5/7x
The x miles Mrs. Goetz can run plus 5/7 OF x miles more.
100
One week, a soccer ball costs $20. The next week, it cost $25. By what percent did the cost increase?
25%
100
One week, a soccer ball cost $20. The next week, it cost $15. By what percent was it discounted?
25%
100
Sales tax in Maryland is 6%. How do you write 6% as a decimal?
0.06
100
Ms. Wagner drank X ounces of coffee, and Mrs. Reynolds drank Y ounces of coffee. What scenario does the tape diagram represent?
"Mrs. Reynolds drank (#) (more/less) ounces of coffee than Ms. Wagner did."
Mrs. Reynolds drank 1/4 less ounces of coffee than Ms. Wagner did.
200
Mr. Saunders ate x donuts this morning. Mrs. DiLegge ate 1/3 as many donuts as Mr. Saunders. Which expressions represents how many donuts Mrs. DiLegge ate?
A. 1/3x
B. x / 1/3
C. 3x
D. x + 1/3
A. 1/3x
1/3 OF x donuts Mr. Saunders ate.
200
George was at soccer practice for 120 minutes. Iker was at boxing practice for 25% longer. How long was Iker at boxing practice for?
150 minutes.
200
Everything at Target is 20% off. If a purse normally $16, what is the discount price?
$12.80.
200
Sales tax in Maryland is 6%. What would sales tax be on an item that costs $20?
$1.20
200
Which diagram shows a 33% increase?
Diagram A.
300
Mr. Mitchell can play 12 different instruments. Mr. Moon can play 1/4 as many instruments as Mr. Mitchell. Which expression represents how many TOTAL instruments Mr. Mitchell and Mr. Moon can play together?
A. 12(0.25)
B. 12 + 1/4
C. 12 - 12(0.25)
D. 12 + 12(0.25)
D. 12 + 12(0.25)
12(0.25) = 1/4 OF 12 = 3
12 + 3 = 15 total instruments.
300
McDonald's pays $18 per hour. If Ms. Wagner's brother is offered a 6% raise, how much will he make per hour?
$19.08 per hour.
300
A NeeDoh cube costs $15. It is on sale for $12. Was percent is it discounted?
20% discount.
300
Sales tax in Maryland is 6%. How much would a $15 item cost after tax?
$15.90
300
Which diagram represents y = 2/3x?
Diagram B.
400
The average sales tax in Wyoming is 5.56%. Which equation represents the sales tax (t) you would pay in Wyoming for an item of cost (c)?
A. t = 0.0556c
B. t = 0.556c
C. t = c / 0.0556
D. t = 5.56c
A. t = 0.0556c
400
Mrs. Wilkinson bought a car on Facebook Marketplace for $2000. She fixed it up and sold it for $2800. What percent did she mark it up?
40%
400
Everything at Target is 20% off.If the discount price of a pair of sunglasses is $9, what is the regular price?
$11.25.
400
Sales tax in Maryland is 6%. If sales tax on an item was $1.50, how much did the item cost?
$25.00
400
Ms. Wagner was writing the decimal representation of 7/8. Did she make a mistake, and if so, what did she do wrong?
Yes, Ms. Wagner mixed up the divisor and dividend.
500
Mrs. Fitzhenry has a recipe for an alcohol-free pina colada. She uses 5 1/2 cups of pineapple juice to make 4 servings.
Which equation represents the relationship between (s) servings and (p) cups of pineapple juice?
A. s = 11/2 p
B. s = 2/11 p
C. s = 8/11 p
D. s = 11/8 p
C. s = 8/11 p
500
Kennedi weighed Ms. Wagner's can of Cherry Diet coke and it was 404.25 grams. This was 5% heavier than it is supposed to weigh. How much is the can supposed to weigh?
385 grams.
500
Egypt poured out a can of Cherry Diet Coke and it was only 11 ounces. It is supposed to have 12 ounces. What was the percent error when filling the can? (What percent 12 ounces was it missing?)
Approximately 8.3%
500
Willow bought a keyboard in Alabama for $60.00. Sales tax was $2.40. What percent is sales tax in Alabama?
4%.
500
Mrs. Gibbons-O'Neill was writing the decimal representation of 7/12. Did she make a mistake, and if so, what did she do wrong? If not, what is the solution?
No, the correct answer is 0.58(3 repeating).