IXL - Classify numbers (Algebra 1 practice)

or

Is
7
4
an
irrational
number?

yes

no

ref_doc_title.

or

Learn with an example

question

Which
of
the
following
describe
8.666...
?
Select
all
that
apply.

natural number

whole number

integer

rational number

key idea

Natural numbers are counting numbers: 1, 2, 3, ...

Whole numbers are counting numbers and 0: 0, 1, 2, 3, ...

Integers are positive whole numbers, their opposites, and zero: ..., -3, -2, -1, 0, 1, 2, 3, ...

Rational
numbers
can
be
written
as
a
b
(where
a
and
b
are
integers
and
b
is
not
zero).
When
written
as
decimals,
rational
numbers
terminate
or
repeat.

solution

Natural
numbers
are
counting
numbers. So,
8.666...
is
not
a
natural
number.

Whole
numbers
are
counting
numbers
and
0. So,
8.666...
is
not
a
whole
number.

Integers
are
counting
numbers,
their
opposites,
and
0. So,
8.666...
is
not
an
integer.

8.666...
is
a
repeating
decimal. So,
8.666...
is
a
rational
number.

There
is
one
correct
answer
choice. 8.666...
is
a
rational
number.

Looking for more? Try these:

Lesson: Rational numbers

Lesson: Irrational numbers

Lesson: Integers

or

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Teacher tools

Work it out

Not feeling ready yet? These can help:

A.8Square roots

B.2Convert between decimals and fractions or mixed numbers

A.11Classify rational and irrational numbers

Lesson: Rational numbers

Lesson: Irrational numbers

Lesson: Integers