Mental Math
What is (17 + 26) - 8?
35
What do you call a 12-sided shape?
Dodecagon
What ancient civilization used a base-60 number system?
Babylonians
I’m a number you get when you add one dozen and half a dozen. What number am I?
18
What is the smallest positive integer that is divisible by 3, 4, 5, and 6?
What is (48 - 19) + 15?
What do you call a number that can be divided evenly only by 1 and itself?
prime numbers
What Greek mathematician is famous for a theorem about right triangles?
Pythagoras
If you double me and subtract 4, you get 10. What number am I?
7
Solve for x: 2(x + 3) = 4x - 6.
6
What is (900 - 478) + (36 ÷ 6)?
428
What do you call square roots of negative numbers?
imaginary numbers
Who is known as the father of geometry?
Euclid
I am less than 20 and a multiple of both 2 and 3. What number am I?
12
111,111,111 x 111,111,111 =
12,345,678,987,654,321
What is the sum of the greatest 25 negative integers (-25 to -1)?
What is a grid of numbers, and yes, it powers 3D transformations and more?
a matrix
Who invented the concept of zero?
Ancient Indians
I have two U.S. coins that add up to 30 cents.
One of them is not a nickel.
What are the two coins?
a nickel and a quarter
What temperature is the same in both Celsius and Farenheit?
-40 degrees
What is the sum of the first 50 integers (1-50)?
1275
A pattern that repeats itself at smaller and smaller scales?
a fractal
Which mathematician was on the U.S. $100,000 bill?
Salmon P. Chase
If a student and a half write a paper and a half in a day and a half, how many papers will half a dozen students write in a dozen days?
48
Complete the sequence:
1, 11, 21, 1211, 111221,
312211