Question

Which of these numbers is not an integer?

A. -1
B. 0
C. 1/2
D. 1

Answer 1

An integer is a whole number that can be counted. An example scale is

-5, -4, -3, -2, -1, 0, 1, 2, 3, 4, 5,

An integer does not include fractions/decimals. The only number that is not an integer is C because A, B, and D are all on the integer scale.