Numeral Systems
This numeral system uses base 10, but doesn't have a symbol for '0'.
What are Roman numerals?
A prime number has only two factors : ______ and _______.
What is 1 and itself?
What is the least common multiple of 3 and 10?
What is 30?
A number is divisible by 2 if the number is ______
What is even?
3 hundreds, 2 tens, and 5 ones
What is 325?
The base _____ system, used by the Babylonians/Sumerians, is similar to our system of counting seconds and minutes.
What is base 60?
Composite numbers always have more than _____ factors.
What is two factors?
What is the greatest common factor between 25 and 60?
Yes, because the last digit is a zero.
5000+400+20
What is 5420?
What is IX + XVI?
What is 9 + 16 = 25
This is the only prime number that is even.
What is 2?
A radio station is having a contest. Every 6th caller will receive a limo ride, and every 5th caller will receive concert tickets. Which caller will be the first to receive both?
What is the 30th caller?
Is 345 divisible by 3?
(3+4+5 = 12)
One million, four hundred and fifty thousand, 2 hundred and twelve
What is 1,450,212?
This numeral system used based 20, and it represented 'zero' using a shell symbol.
What is the mayan number system?
This number is neither prime nor composite.
What is zero?
Cups are sold in bags of 10, and plates are sold in bags of 3. You want to buy the same number of plates and cups. What is the fewest number of bags you should buy for each?
What are 3 bags of cups, and 10 bags of plates
(30 cups and 30 plates)
Yes, because it is divisible by 2 and 3.
1,542,600 in expanded form
What is 1,000,000 + 500,000 + 40,000 + 2000 + 600
This number system used base 60, and had a true place value system (with symbols up to 3600).
What is the babylonian/sumerian number system?
61 is a ___________ number.
What is prime?
What is 40 cm?
Is 42160 divisible by 8?
Yes, because the last 3 digits (160) is divisible by 8.
Write down one billion in number form.
What is 1,000,000,000?