Mark Twain I.S. 239Name: ______

7C/ ID____Due Date:Friday December 14th

Extra Credit Project - Percentage

Assignment: During our Ratios & Proportions Unit, we solved word problems involving shopping, temperature, bank transactions and several other real-world applications of percentage. Your assignment is to create and solve your own real-life word problem involving percentage. For this project you must show all your work and decorate your project with related pictures and art. Completing this assignment can enable you to earn up to 8 points to be combined with your tests and quizzes grade for the second marking period.

Directions:

ID1/ID2:Your problem must take at least two steps to solve.

ID3/ID4:Your problem must take at least four steps to solve.

***Your word problem must involve BOTH percentage and decimal numbers***

Example(ID1/ID2):

Kerry purchased a pair of sneakers on sale for $59.50. If the original price of the sneakers was $80, what was the rate of discount?

Solution:

$59.50/$80 = x/100

5,950 = 80x

30 = x

30% discount

Example(ID3/ID4):

The snowfall accumulation in November totaled 6.8 inches. In December, the snowfall accumulation totaled 8.5 inches. One month later in January, the total snowfall accumulation was 19.2 inches. What was the percent change of the snowfall from November to December? From November to January? From December to January? Round all of your answers to the nearest tenth.

Solutions:

November to December:

(1.7/6.8)(100)

= (.25)(100)

= 25% increase

November to January:

(12.4/6.8)(100)

= (1.8235…)(100)

=182.4% increase

December to January:

(10.7/8.5)(100)

= (1.2588…)(100)

= 125.9% increase

Grading Rubric:

Your project must include each of the following:

1. Name and ID only on top of the page

2. Real-life percentage word problem…………………………………………………..……(2 points)

3. ID1/2 - at least two steps

ID3/4 – at least four steps………………………………………………………………… (2 points)

4. Each step of your example, with correct work, and final answer are shown……..…...(2 points)

5. Artistic expression relating to your problem………………………………….…….……(1 point)

6. Neatness, creativity, and overall effort…………………………………….……….……..(1 point)

Total:8 points

Guidelines:

  • Your project must be on construction, computer, or stationary paper of size 8½” by 11”. No loose-leaf paper.
  • Color pencils, markers, glitter or gel pens are acceptable.
  • If you use pencil to create your problem first, you must trace over it with one of the other writing tools.
  • Type or write neatly using a ruler if you hand-write the assignment.