Adding rational numbers with the same sign

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Adding rational numbers
Essential question: How can you add
rational numbers?
Unit 1-2
Adding rational numbers
Vocabulary
Sum- the answer to an addition problem
Absolute value- is never negative, refers to the
distance from zero.
Adding rational numbers with the
same sign
• To add two rational numbers with the same
sign, find the sum of their absolute values.
Then use the same sign of the two rational
numbers.
Adding rational numbers with
different signs.
• To add two rational numbers with different
signs, find the difference of their absolute
value. Then use the sign of the rational
number with greater absolute value.
Adding rational numbers
• The opposite, or additive inverse, of a number
is the same distance from 0 on a number line
as the original number, but on the other side
of 0.

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