Question

Select all the numbers that are rational.

0.45623…
50−−√
0.325
13
–142

Answer 1

13, 0.325, and -142

Explanation:

13 because the number terminates, 0.325 because the decimal terminates, and -142 because it is a negative integer, the rule with rational numbers is that they must follow a pattern if continuing or terminate or be a positive or negative integer. For example, pi is an irrational number so is 0.45623... and 50--√.