# Math Quiz: Unit 2

### 14 terms by alabasterlilies

#### Study  only

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### natural numbers

all positive integers; also called counting numbers

### whole numbers

all positive integers and 0

### integers

positive, negative, and 0

### rational numbers

any number that can be expressed as a fraction

### real numbers

any number except for the root of a negative

### Commutative of Addition or Multiplication

a+b=b+a
You can change order without changing answer

### Associative of Addition or Multiplication

(a+b)+c=a+(b+c)
You can change grouping symbols without changing answer

The sum of zero and any number is the number

The sum of any number and its opposite is zero

### Multiplicative Identity

You can multiply any number by 1 and get the number

a times 0=0

a times -1=-a

### Multiplicative Inverse

When two reciprocals multiply, the product is zero

### term

the parts of an expression separated by zero

Example: