What is the formula to calculate percent of change?
Mod 5 test 1A(Missing %, % to dec, % of a num, mark up and down

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Mathematics
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7th Grade
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Hard
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1.
FLASHCARD QUESTION
Front
Back
Percent of Change = (New Value - Old Value) / Old Value × 100
2.
FLASHCARD QUESTION
Front
If a product originally costs $200 and is marked down to $150, what is the percent decrease?
Back
Percent Decrease = (200 - 150) / 200 × 100 = 25% decrease
3.
FLASHCARD QUESTION
Front
How do you convert a percentage to a decimal?
Back
To convert a percentage to a decimal, divide by 100. For example, 25% = 0.25.
4.
FLASHCARD QUESTION
Front
What is 15% of $293?
Back
15% of $293 = 0.15 × 293 = $43.95
5.
FLASHCARD QUESTION
Front
If a toy costs $250 and has a 20% discount, what is the sale price?
Back
Sale Price = Original Price - (Discount × Original Price) = 250 - (0.20 × 250) = $200
6.
FLASHCARD QUESTION
Front
What is the total discount if a toy is first discounted by 20% and then an additional 50%?
Back
Total Discount = Original Price - (Original Price × 0.20) × 0.50 = $250 - ($200 × 0.50) = $100
7.
FLASHCARD QUESTION
Front
If 20% of 15 expo markers are blue, how many markers are blue?
Back
Number of Blue Markers = 20% of 15 = 0.20 × 15 = 3 markers
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