7th Grade Math

(Marvins-Underground-K-12) #1

Test PracticeT


358 Percent

C 20. CHALLENGE A gift store is having a sale in which all items are
discounted 20%. Including tax, Colin paid $21 for a picture frame.
If the sales tax rate is 5%, what was the original price of the picture
frame?


  1. OPEN ENDED Give an example of the sale price of an item and the total
    cost including sales tax if the tax rate is 5.75% and the item is 25% off.

  2. REASONING Two department stores, The James Store and Ratcliffe’s, are
    having sales. The stores sell the same brand of sneakers. The James
    Store usually sells them for $50, but has marked them at 40% off. At
    Ratcliffe’s, the sneakers are marked down to 30% off of the usual price
    of $30. Which store has the better sale price? Explain.

  3. E WRITE MATH Describe two methods for finding the sale price of an
    item that is discounted 30%. Which method do you prefer? Explain.

  4. RESTAURANTS Mitchell spent $13 on dinner. He wants to tip the server 15%.
    About how much money should he leave as the tip?(Lesson 3C)


Find the percent of change. Round to the nearest whole percent if necessary.
State whether the percent of change is an increase or decrease. (Lesson 3B)


  1. 35 birds to 45 birds 29. 60 inches to 38 inches 30. $2.75 to $1.80
    24. A computer software store is having a
    sale. The table shows the regular price r
    and the sale price s of various items.


Item Regular Price (r) Sale Price (s)
A $5.00 $4.00
B $8.00 $6.40
C $10.00 $8.00
D $15.00 $12.00

Which formula can be used to calculate
the sale price?
A. s = r × 0.2 C. s = r × 0.8
B. s = r - 0.2 D. s = r - 0.8


  1. A chair that costs $210 was reduced by
    40% for a one-day sale. After the sale,
    the sale price was increased by 40%.
    What is the price of the chair?
    F. $176.40 H. $205.50
    G. $185.30 I. $210.00

  2. Carmen paid $10.50 for a T-shirt at the
    mall. It was on sale for 30% off. What
    was the original price before the
    discount?
    A. $3.15 C. $15.00
    B. $7.35 D. $35.00


345_363_C06_L3_895130.indd 358 12/30/09 4:09 PM

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