5th - 12th grade

Continue the pattern
1, 2, 10, 11, 12, 20, 21, 22, 100, 101, ...

7th - 10th grade

An iphone screen is 3.5" measured diagonally at a ratio of 3:2. Jennie's TV is 31.5" measured diagonally and at a ratio of 16:9. How many iphone screens would it take to make a picture the size of Jennie's TV?

4th - 12th grade

Count the rectangles.

6th - 10th grade

Vani Dug a hole 3 feet deep, 2 feet wide, and 4 feet long. How much dirt is in her hole?

9th-11th grade

Examples:
..\15/
.7\ / 8
.../ \
./56\

....\14/
.12\ / 2
...../ \
.../24\

Questions

.......\3x-9/
.x+2\..... /?
......../..... \
....../....?... \

..\2√(a+b)/
..?.\....... /.?
......./...\.
...../a+b\

4th - 10th grade

Christina has two jars of marbles. The red jar has 100 red marbles. The blue jar has 100 blue marbles. Christina takes 20 marbles from the red jar and stirs them into the blue jar. Then she takes 20 marbles from the blue jar and stirs them into the red jar. Which jar has the most marbles of the opposite color?

8th - 11th grade

If you continue the pattern

1/8, 1/4, 1/2, 1/1, 1/0.5, 1/0.25, ...

forever, what is the value of the final term?

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?

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.

All Grades - More Homophones

I did this number to my sandwich

This verb was used after the name of my Football team

This number means “in place of”

This number means “In front”

This number means “toward”

Bill this number his dog on the burglar

This word that means “a few” helps you add.

All Grades - Homophones - or "Guess the Misspelled number"

Each answer is a number whose homophone meets the defition - A number that misspelled but pronounced the same has a different meaning

A. This number means "Watch out"
B. This number means "also"
C. This number means "No" in German
D. This number is a preposition
E. Another name for this number means "to tie"
F. This number is a search engine

3rd - 12th grade

Use exactly 6 lines to make a 12-sided figure (polygon).

5th-11th grade

At the G20 summit, 20 top world leaders get together. If every leader shakes every other leader's hand once, how many total hand shakes will occur?

7th-10th grade

John drives straight 3 miles, then turns right and drives 4 miles. He turns left and drives 2 more miles. How many mils along the ground would he travel by helicopter?

Hint: you will need to use the Pythagorean Theorem.