6th Grade Math Textbook, Progress

(Marvins-Underground-K-12) #1

Integers


5-1


 5  4  3  2  1 0  1  2  3  4  5

Negative integers
are less than 0.

Positive integers
are greater than 0.

Zero is neither
positive nor negative.

Read:negative 2
Write: 2

Read:positive 2
Write:2 or 2

opposites


  • Two integers are opposites (additive inverses)
    if they are the same distance from zero on the
    number line, but are on opposite sides of zero.
    Each integer has an opposite.
    The opposite of2 is 2. Write: (2) =  2
    The opposite of 2 is 2. Write: (2) =  2
    The opposite of 0 is 0. Write: (0) = 0

  • The absolute value of an integer is its distance
    from zero on a number line.
    The absolute value of 2 is 2. Write: ⏐ 2 ⏐ 2
    The absolute value of 2 is 2. Write: ⏐ 2 ⏐ 2
    The absolute value of 0 is 0. Write: ⏐ 0 ⏐ 0


Positive integers
are commonly written
without the positive sign.

A mountain peak has an altitude of
11,560 ft above sea level. A desert location
has an altitude of 185 ft below sea level.

You can write these numbers as integers.
Integers are the whole numbers and their
opposites. They are either positive,
negative, or zero.
0 ft sea level
11,560 ft above sea level
185 ft below sea level

A number line can help you see the
relationship between integers.

2.3

8206-2_150-151 10/7/07 11:08 AM Page 150

Free download pdf