Numbers
Find the sum of all prime numbers between 20 and 40.
120 (23 + 29 + 31 + 37)
If 3x + 12 = 45, what is the value of x?
x = 11
A cube has a volume of 125 cubic centimeters. What is the side length of the cube?
5 cm
How many minutes are in 3 and 1/12 hours?
185 minutes
Which is larger: the sum of 1/2 + 1/3 or the value of 5/6?
They are equal
A "Perfect Number" is a number where the sum of its proper divisors equals the number itself. What is the only perfect number between 1 and 10?
6 (Divisors: 1, 2, 3. Sum: 1+2+3=6)
Solve for n: 4(n - 5) = 2n + 10
n = 15
If a square has a perimeter of 40cm, what is its area?
100 sq cm
You have $20. You buy 3 notebooks for $4.50 each. How much change do you get back?
$6.50
A water tank is 1/4 full. After adding 15 gallons, the tank is now 2/3 full. What is the total capacity of the tank in gallons?
36 gallons
What is the smallest number that is divisible by every integer from 1 to 5?
60
I am thinking of a number. If you double it, add 10, divide by 2, and subtract the original number, what is the result?
5 (Every time, regardless of the starting number)
How many edges does a standard cube have?
12
You have an equal number of quarters, dimes, and nickels. The total value is $4.80. How many of each coin do you have?
12
Solve: What is 3/4 of 2/3 of 1/2 of 120?
30
How many total factors does the number 360 have?
24
Find three consecutive integers whose sum is 138.
45, 46, and 47
A rectangle has a length of 12 and a width that is half its length. What is the perimeter?
36 (12+12+6+6)
A digital clock shows 12:00. What is the next time the digits will add up to a sum of 5?
12:02
What is the reciprocal of 2 and 1/2?
2/5
Solve for x: 2(3x + 9) = x+3
How many degrees are in a right angle plus a straight angle?
270 (90 + 180)
An item goes on sale for 20% off. After a week, the sale price is discounted by another 10%. What is the total percentage discount from the original price?
28%
If you eat 3/8 of a pizza and your friend eats 1/4, how much of the pizza is left?
3/8