1
This word is derived from the Old Norse word "hundrath" which actually means 120
2
Along with "zip", "nil", and "naught", this is another name for zero
3
Who said "Arithmetic is being able to count up to twenty without taking off your shoes."
5
the number 4 is considered unlucky in much of this continent because the words for "four" in local languages (shi, sei, si, sa) sound the same as the words in those languages for death
6
555 is used by some in Thailand as slang for this texting phrase because it has the same pronunciation as part of the phrase
8
It wasn’t until this century that most mathematical symbols were invented.
9
7 is the most popular favourite number in the word; this is the second favourite number
10
The total is 5,050 if you do what to the numbers from 1-100?
14
The spiral shapes of these flowers follow a Fibonacci sequence
15
This is an actual unit of time, equal to 1/100th of a second
17
The Greek mathematician, Pythagoreans used small rocks to signify numbers while working on mathematical equations. This is how this math originated, as the word means pebbles in Greek
19
in a room of just 23 people there's a 50% chance that two people have the same what?
21
The three internal angles of a triangle always add up to 180 this
22
Cutting a cake into this many pieces is possible with just 3 slices
23
This is a polygon with 4 sides of equal length and 4 right angle corners
25
2 and 5 are the only type of these numbers that end with a 2 or a 5.
27
Zero is this type of number
29
If two's company and three's a crowd, what are four and five?
30
If you write out the numbers 0-1000, the letter "A" appears this many times