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Percentage Changes Using Calculators
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Percentage Changes Using Calculators
Use a calculator where needed. Show your working and give money answers in dollars.
Multipliers and calculator practice
1.Which decimal multiplier increases a quantity by 15%?
- 0.15
- 1.15
- 0.85
- 15
2.Which decimal multiplier reduces a quantity by 25%?
- 0.25
- 1.25
- 0.75
- 25
3.A $240 item has its price increased by 12%. Write the calculator multiplication and find the new price.
4.A $360 appliance is discounted by 15%. Write the calculator multiplication and find the sale price.
Percentage changes in context
5.A laptop costs $750. Its price rises by 6%. What is the new price?
6.A pair of shoes originally costs $160 and is marked down by 35%. How much does a customer pay?
7.A community had 12,500 residents and later had 14,000. Calculate the percentage increase in its population.
8.A kayak's price drops from $900 to $765. What percentage decrease does this represent?
Think it through
9.A $150 backpack is discounted by 10%. The discounted price is then increased by 10%. Find the final price and state whether it matches the original price. Explain briefly.
10.Explain why multiplying a starting amount by one decimal multiplier can be a convenient way to calculate a percentage increase or decrease.
2 printable pages
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