Estimating and Finding Exact Answers
The Percent Equation
Tax, Tip and Markup
Discount
Simple Interest
100
Change 0.05 into a percent.
5%
100
What is the percent equation?
part = percent x whole
100
How do I find the tax, tip or markup?
Multiply the % as a decimal times the regular price part = % x whole
100
How do I find the discount?
Multiply the % as a decimal times the regular price part = % x whole
100
What is principal?
The amount of money deposited or borrowed.
200
Change 120% into a decimal.
1.20
200
Translate into an equation: What is 50% of 75?
n = 0.50 x 75
200
How do I find the total selling price if there is tax, a tip, or a markup?
Add the tax, tip or markup to the regular price.
200
How do I find the total selling price if there is a discount?
Subtract the discount from the regular price.
200
What is the equation for simple interest?
I = prt
300
Estimate 31% of 39 to the nearest whole number.
12
300
Translate into an equation: 80 is what percent of 150?
80 = n x 150
300
Find the total selling price. Original price of a ring: $160 Tax: 8%
$172.80
300
Find the total selling price. Original price of a watch: $99 Discount: 10%
$89.10
300
Find the interest on a $2000 loan at 5% simple interest for 2 years.
$200
400
Find 60% of 85 to one decimal place.
51
400
Translate into an equation: 12 is 40% of what number?
12 = 0.40 x n
400
Find the total selling price. Original cost of breakfast: $22.10 Tip: 20% Tax: 5%
$27.63
400
Find the total selling price. Original price of a video game: $49.99 Discount: 30%
$34.99
400
Find the interest on a $250 savings account at 3.5% simple interest for 5 years.
$43.75
500
Find 5% of 25 to one decimal place.
1.3
500
Write an equation and solve the following: 50 is what percent of 600?
50 = n x 300 n = 8.3%
500
Find the total selling price. Original price of a box of fireworks: $23 Markup: 150%
$57.50
500
Find the total selling price. Original price of a mountain of waffles: $600.01 Discount: 85%
$90.00
500
Find the interest on a car loan of $22,000 at 9.9% simple interest for 6 years.
$13,068
M
e
n
u