Ratios, Unit Rates, and Proportions
What are 3 ways you can write a ratio?
As a fraction, with a colon, and with the word "to"
Lucy spins a spinner. The spinner has 4 equal sections labeled a-d. What is the probability the spinner will land on the letter "A"?
1/4 or 0.25 or 25%
Amir took 7 tests and received his scores. What is the average of his test scores? 96, 87, 85, 100, 99, 79, 91.
His average is 91.
What is 0.03 written as a fraction and percent?
3/100 and 3%
What is the total cost of a baseball bat priced at $110 with a 6.5% tax?
$117.15
Write 6 girls to 8 boys as a ratio in 3 ways.
6/8, 6 to 8, 6:8
Yazmeen has 32 dogs and 16 cats. What is the probability of randomly selecting a dog?
2/3 or 0.67 or 67%
These are Jared's scores from a series of football games. Which score occurred most often? 7, 13, 18, 24, 18, 3, 18, 4, 14
The mode is 18.
What is 42% written as a fraction and decimal? (REDUCE YOUR FRACTION)
21/50 and 0.42
What is the sale price for an item regularly $65 with a 15% discount?
$55.25
If James types 120 words per minute, what is his rate of typing?
40 words per minute
What's the probability of flipping a coin and getting "heads"?
1/2 or 0.50 or 50%
Nirendi has 1 sister, 2 stepsisters, 1 stepbrother, and 2 brothers. The sister is 23. The two stepsisters are 15 and 17. The stepbrother is 19. The two brothers are 8 and 18. What is the range of the ages of her siblings?
The range is 15.
What is 1/5 written as a decimal and percent?
0.20 and 20%
What is the discount for an item costing $85.50 that 20% off?
$17.10
Sole for x. 6/10 = 18/x
30
How likely is it that a cube is tossed and it lands on 8?
Impossible
Laila's family has 5 children aged 12, 5, 7, 16, and 13. What is the age of the middle child?
The middle child's age is 12.
What is 52/100 written in simplest form?
13/25
What is the total bill for a $60 dinner with a 20% tip?
$72
Solve for x. 3/8 = 15/x
40
A letter tile is randomly selected from a bag, recorded, and replaced 100 times. The results are listed below. What is the experimental probability of selecting the letter "E"?
A = 16
E = 11
I = 29
O = 19
U = 25
11/100 or 0.11 or 11%
Avah owns 10 horses in Alabama. They are all different ages. Find the mean, median, mode, and range of their ages. 8, 9, 2, 6, 24, 15, 14, 21, 9, 14
Mean: 12
Median: 16
Mode: 9 & 14
Range: 22
What is 80/100 written in simplest form?
4/5
What is the total amount paid for a stereo that costs $59.99 with a 7% tax?
$64.19