C H A P T E R 2 . 1

ALGEBRA 1

Real Numbers

Rational Numbers

IrrationalNumbers

Integers

Whole Numbers

Natural

See page 1

RATIONAL NUMBER

• What is a rational number?• Any number the can be written in the form of

where a and b are integers and b ≠ 0• Any repeating or terminating decimal.

OPPOSITES AND ABSOLUTE VALUE

• When two number are the same distance from zero.• Their sum is always zero.

• The distance a number is from zero.• |a| = a when a is positive• |a|= 0 when a is zero• |a| = -a when a is negative

CONDITIONAL STATEMENTS

• It has a hypothesis and a conclusion.

• An if-then statement.• The if is the hypothesis and the then is the

conclusion.

• They can be true or false.• If it is false prove it false with a counterexample.

CONDITIONAL STATEMENT

• If a number is a rational number, then the number is an integer.

• If a number is a rational number, then the number is positive.

• If the absolute value of a number is positive, then the number is positive.

CLASS WORK

Lesson 2.2 Practice BLesson 2.3 Practice CLesson 2.4 Practice B