History Of Numbers
What number doesn’t have its own Roman numeral?
0
What is the digit in the tens' place in 124?
2
5 - 8
-3
What is the third triangular number?
6
4+6x3
22
Where is four considered an unlucky number?
Asia
What is the place value of the 4 in 1,754?
Units, tens, hundreds or thousands
Units
-2 - 3
-5
What is the sixth trianglular number?
21
81÷9x(51+90)
1269
What is the only even prime number?
Two
What is the place value of the 3 in 197636.8045
Units, tens, hundreds or thousands
tens
15 - (-17)
32
What is the tenth spuare number?
100
67x3+21÷3
208
What is our current numerical system based on?
Hindu-Arabic numeral system
What is the digit in the ten thousandths' place in 44.0105?
5
–3 − (–1)
-2
What is the 19th square number?
361
26x36+5x242
2146
What is the only number that has the same number of letters as it’s meaning?
Four
what digit is in the hundred thousanths' place in 1 987 435.946819
1
16 - (-29) + (-70)
-25
What is the 21st trianglular number?
231
5x((25x41)+(9x23))+2652
76385