unit 2

Question 1

counting (natural ) numbers

Answer 1

the set of positive numbers that begins at

one and increases by increments of one each time {1, 2, 3, …, n}.

Question 2

-integers

Answer 2

the set of counting (natural) numbers, their opposites, and
zero {-n, …, -3, -2, -1, 0, 1, 2, 3, …, n} The set of integers is denoted by
the symbol Z.

Question 3

-order numbers:

Answer 3

to arrange a set of numbers based on their numerical

value

Question 4

-percent:

Answer 4

a part of a whole expressed in hundredths

Question 5

-positive rational numbers

Answer 5

the set of numbers that can be expressed
as a fraction !
“
, where a and b are counting (natural) numbers

Question 6

-rational numbers:

Answer 6

numbers: the set of numbers that can be expressed as a
fraction !
“
, where a and b are integers and b ≠ 0. The set of rational

numbers is denoted by the symbol Q.

Question 7

-whole numbers:

Answer 7

the set of counting (natural) numbers and zero {0, 1,

2, 3, …, n}