Real Numbers

Which of these is written to 2 significant figures?

• 300

• 7.90

• 4.31

• 102

What is the definition of a real number?

• A number whose only factors are 1 and itself

• A positive or negative whole number

• Any number on the number line

Which of these numbers is a prime number?

• 6

• 5

• 18

• 20

• 24

• 17

Which of these are the symbol for a Rational Number?

• Q

• Z

• N

• R

What is the definition of a rational number?

• A positive or negative whole number

• Any number on the number line

• A positive whole number

• 3

• 4

• 12

• 1

What is the definition of the highest common factor of a pair of numbers?

• It is always 1

• The two numbers multiplied together

• The highest number that both numbers divide into

• The highest number that can divide into both numbers