Match each property to its statement

Exercise and reference answers

Matching pairs

1. Left

   Closure

   Right

   the result stays a rational number

2. Left

   Commutative

   Right

   a + b = b + a

3. Left

   Associative

   Right

   (a + b) + c = a + (b + c)

4. Left

   Additive identity

   Right

   adding 0 changes nothing

5. Left

   Multiplicative identity

   Right

   multiplying by 1 changes nothing

Explanation