True or false: reading the properties

Exercise and reference answers

Questions

1. Statement is true

   Yes

   Statement

   Addition of rationals is commutative.

2. Statement is true

   Yes

   Statement

   Multiplication of rationals is associative.

3. Statement is true

   Yes

   Statement

   a(b − c) equals ab − ac.

4. Statement is true

   No

   Statement

   Adding 1 leaves a rational number unchanged.

5. Statement is true

   Yes

   Statement

   Multiplying by 1 leaves a rational number unchanged.

Explanation