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IM 7.6.12 Practice: Solving Problems about Percent Increase or Decrease

Author:GeoGebra Classroom Activities, IM 6 – 8 Math

A backpack normally costs $25 but it is on sale for $21. What percentage is the discount?

Find each product.

Select all expressions that show  increased by 35%.

Select all that apply
  • A
  • B
  • C
  • D
  • E
  • F
Check my answer (3)

Complete each sentence with the word discount, deposit, or withdrawal.

Clare took $20 out of her bank account. She made a _____.

Select all that apply
  • A
  • B
  • C
Check my answer (3)

Kiran used a coupon when he bought a pair of shoes. He got a _____.

Select all that apply
  • A
  • B
  • C
Check my answer (3)

Priya put $20 into her bank account. She made a _____.

Select all that apply
  • A
  • B
  • C
Check my answer (3)

Lin paid less than usual for a pack of gum because it was on sale. She got a _____.

Select all that apply
  • A
  • B
  • C
Check my answer (3)

The initial freshman class at a college is 10% smaller than last year’s class. But then during the first week of classes, 20 more students enroll. There are then 830 students in the freshman class.

Which equation matches this story?

Select all that apply
  • A
  • B
Check my answer (3)

Solve the equation you chose, and explain what the solution means in the situation.

A store reduces the price of a computer by $20. Then during a 10% off sale, a customer pays $830.

Which equation matches this story?

Select all that apply
  • A
  • B
Check my answer (3)

Solve the equation you chose, and explain what the solution means in the situation.

In the problems above, why does one equation have parentheses and the other doesn't?

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