Roman Numerals and Prime Numbers

What is the Roman numeral for 10?

• X

• V

• C

• L

Convert the number 15 into Roman numerals.

• XVI

• XIII

• XV

• XIV

What is the smallest prime number?

• 5

• 2

• 1

• 3

How do you represent the number 50 in Roman numerals?

• L

• LIV

• C

• XL

Is 21 a prime number?

• It has three factors

• Yes

• No

• It is an even number

What is the Roman numeral for 100?

• C

• X

• L

• D

List the first five prime numbers.

• 2, 3, 4, 5, 6

• 2, 3, 5, 7, 10

• 1, 4, 6, 8, 9

• [2, 3, 5, 7, 11]

What is the greatest common divisor (GCD) of 12 and 16?

• 2

• 4

• 6

• 8

Convert the Roman numeral XLIV to Arabic numerals.

• 40

• 44

• 42

• 48

What is the least common multiple (LCM) of 4 and 5?

• 15

• 12

• 20

• 25