5th grade

On average, how long does each president stay in office?

- George Washington became president in 1789
- George W. Bush was the 43rd president

9th-12th grade

What whole number is closest to 1/∞ ?

Why?

7th - 11th grade

In Deal or no Deal 1 case is worth $1 Million. The other cases are not. The player selects a case, then begins to open the other cases. After 18 cases have been opened and found to not have the $1 Million, there are two cases left. The player then has a chance to switch cases. Should the player switch cases?


Hint: What is the probability the $1 million is in the original case, and what is the probability that it is in the other case? They're not the same!

Place Value 4th-12th grade

4th grade:

Which digit is in the 10s place of 68x68?

6th grade:

Which digit is in the thousandths place of 1/7?

7th grade:

Which digit is in the thousandths place of 1/2% of 325% of 11/8?

9th - 12th grade:

Which digit is in the ones place of 4^307?

3rd - 4th grade

The low temperature tomorrow could be as low as 22 degrees below zero. If it is 72 degrees inside, how much colder is it outside than inside?

5th - 7th grade

The average low temperature for three days was 12 degrees. The next two days the low temperature was -20 degrees, and -16 degrees. After the 6th day the average low temperature was -22 degrees. What was the low temperature on the 6th day?

11th grade

6 students are waiting in line for lunch. How many different ways can those 6 students order themselves in line?

4th grade- 5th grade

How many groups of 6 cats are needed to have 80 cats?

Bonus, what is a group of cats called?

5th - 7th grade

Peter's House is 20' Tall. If it snows 4" in 6 hour, how long will it take for Peter's house to be buried in snow?

5th grade

If you were born on January 5th, 87 BC, how old would you be today?


Hint: There was no year 0.

5th grade, 7th grade, or 10th grade

Nate cut a circle with an area of 113 square cm out of a square piece of paper. What are the dimensions of the smallest piece of paper he could have used?

3rd grade and up

Write 20 math problems that equal 20

7th - 11th grade

Ten 8th graders build a boat in 6 days. How long will it take five 8th graders working at the same rate to build a boat?


Hint: Proportions won't help.