Pi
What is the formula for the area of a circle?
A=πr2 or pi x r2
What is the value of |7−12|?
Answer: 5
Find the mean of the following numbers: 5, 10, 15, 20.
12.5
What is the value of a quarter?
25 cents
What is the value of pi? (First 6 digits)
Answer: 3.14159
Find the value of |-4| + |-7|
11
What is the mean of these numbers: 7, 12, 18, 23?
15
Amanda has 5 nickels, 2 quarters, and 3 dimes. How much money does she have in cents?
Answer: $1.05 or 105 cents
What is the area of a circle with a radius of 4 cm?
Answer: 16π cm²
What is |-3| x 4
12
Find the mean of the following numbers: 2, 4, 8, 6.
5
What are integers? (give 3 examples)
Integers are all whole numbers (positive and negative) and zero.
If the circumference of a circle is 30π inches, what is its radius?
15 inches
Evaluate | -5 + 9 - 7 |
The following are the ages of people in a group: 14, 22, 28, 36, 42. What is the mean age?
Answer:28.4
What is the formula to find the volume of a sphere?
V = (4/3)πr3
A sphere has a radius of 3 units.
Find the volume of the sphere round to hundredths.
Answer: Approximately 113.10 cubic units
Solve |−4×3+2|
10
A teacher recorded the number of hours students spent studying over the weekend: 5, 10, 15, and 25 hours. What is the average number of hours the students studied?
13.75 hours
What is -322?
Answer: -1024