Ratios/Proportions
A recipe uses 2 cups of rice for every 5 cups of broth.
What is the ratio of rice to broth?
2:5
What is 25% of 60?
15
You buy a shirt for $20 with a 10% discount.
How much is the discount?
$2
The price of an item was $10 last year, but now it's $12. What is the original price, new price, and the change?
Original: $10
New: $12
Change: $2
I wanted to run 5 miles, but I only ran 4.5 miles. What was my absolute error?
|4.5 - 5|
= 0.5
There are 12 boys and 18 girls in a class.
Write the ratio of boys to girls in simplest form.
2:3
What percent of 40 is 10?
25%
A $50 video game is 30% off.
What is the sale price?
$35
A population changes from 1,200 to 980. What is the original #, new #, and change?
Original: 1200
New: 980
Change: 220
I planned on having 20 people at a party, but 31 came. What is the percent error?
55%
If 4 markers cost $6, how much would 10 markers cost?
$15
A student answered 42 out of 50 questions correctly.
What percent did they get correct?
84%
A restaurant bill is $32. Tip is 15%. What is your new total bill?
$36.80
A student had a grade of 80 last week, but now they have a grade of 87. What is the percent of change? Do not round.
8.75% increase
For a science project, Samuel had a percent error of 5.3%, Rachel had 3.5%, August had 5.1%, and Will had 4.8%. List the students from most accurate to least accurate results
Rachel, Will, August, Samuel
A map scale shows 1 inch = 12 miles. If two towns are 3.5 inches apart,
how many miles apart are they in real life?
42 miles
What is 43% of 120?
51.6
A laptop costs $800. It has a 20% discount, and you have a 5% off coupon as well. What is the new cost of the laptop?
$600
A population changes from 1,200 to 980. What is the percent of change? Round to the nearest TENTH
- 18.3% decrease
A package should weigh exactly 1.5 pounds. If there is 6% error on the weight, what is the approximate error? Round to the nearest tenth.
0.1 pound