Numbers & Negative Numbers

Question 1

What is a real number?

Answer 1

Rational & Irrational Numbers

Question 2

What are irrational numbers?

Answer 2

Numbers which can’t be written as a fraction

Question 3

What are integers?

Answer 3

All negative and positive numbers including 0 which are not decimals/fractions

Question 4

What are whole numbers?

Answer 4

All positive numbers including 0 which are not decimals/fractions

Question 5

What are natural numbers?

Answer 5

All numbers excluding 0 which are not decimals or fractions

Question 6

What are rational numbers?

Answer 6

Numbers which can be written as a fraction. Decimals which terminate or repeat.

Question 7

What is R?

Answer 7

Real Numbers

Question 8

What is W?

Answer 8

Whole Numbers

Question 9

What is R - Q?

Answer 9

Irrational Numbers

Question 10

Why is it R - Q?

Answer 10

Because irrational numbers are the real number system minus rational numbers

Question 11

What is Z?

Answer 11

Integer

Question 12

What is N?

Answer 12

Natural number

Question 13

What is Q?

Answer 13

Rational number

Question 14

What is { }?

Answer 14

Brackets enclosing members of a set. Set notation.

Question 15

What is the identity number of multiplication?

Answer 15

1

Question 16

What is the identity number of addition?

Answer 16

0

Question 17

What is an identity number?

Answer 17

An identity number is a number that doesn’t change the value of the number it’s being operated on

Question 18

What is an opposite number?

Answer 18

The negative or positive version of the same number

Question 19

What number has no opposite?

Answer 19

0

Question 20

How to measure an opposite?

Answer 20

Two numbers must be an equal amount of units away from 0 for it to be an opposite

Question 21

What is the absolute value of a number?

Answer 21

The absolute value is the number of units it is away from 0

Question 22

How the absolute value depicted?

Answer 22

x |

Question 23

How do you add a negative and a positive?

Answer 23

1. Find absolute value of both
2. Find the sign
3. Subtract smaller number from larger number
4. Add the sign found in step 2 to the answer of step 3

Question 24

How do you find the sign?

Answer 24

1. If the absolute value of the positive number is smaller than the absolute value of the negative number then the sign = -
2. IF the absolute value of the negative number is larger than the absolute value of the positive number then the sign is +

Question 25

What happens if the numbers are each others opposite?

Answer 25

The answer is 0

Question 26

What is the sign of a negative - negative?

Answer 26

Negative if the first number is smaller than the second
Positive if the first number is larger than the second

Question 27

What is the sign of a positive - positive?

Answer 27

Negative if the first number is smaller
Positive if the first number is larger

Question 28

What is the sign of a negative - positive?

Answer 28

Negative

Question 29

What is the sign of a positive - a negative?

Answer 29

Positive

Question 30

What happens when you subtract the same negative?

Answer 30

You get 0

Question 31

How to work out the absolute value of an expression?

Answer 31

Simplify the expression first then find the absolute value