Number Skills Challenge

Convert XXVII to numeral.

• 72

• 40

• 35

• 27

Is 17 a prime number? (Yes/No)

• Yes

• No

• Sometimes

• Maybe

Identify a composite number between 20 and 30.

• 23

• 21

• 29

• 31

What is the predecessor of 89?

• 88

• 86

• 90

• 87

Which is greater: 45620 or 46521?

• 46521

• 5421

• 6421

• 45620

Add 3456 and 7892.

• 11348

• 12345

• 9348

• 4567

Express XL in numerals.

• 40

• 60

• 50

• 30

Is 31 a prime number? (Yes/No)

• Yes

• 33

• 29

• No

Identify a pair of co-prime numbers.

• 44 and 22

• 48 and 56

• 15 and 17

• 46 and 92

Round off 7892146 to the nearest hundred.

• 7892000

• 7890000

• 7892100

• 7892140