Download CHAPTER 1: REAL NUMBERS Section 1.6: Addition of Real Numbers Topics: A.

MATH 0960
Section 1.6 Notes
CHAPTER 1: REAL NUMBERS
Section 1.6: Addition of Real Numbers
Topics:
A. Add real numbers.
B. Add fractions.
C. Identify opposites.
D. Add using absolute values.
E. Solve application problems.
A. Add real numbers.
 What does a problem look like?
Example: Add.
( ) ( )
Answer:

What do I need to know?
o Visualize a number line. Negative numbers will move your sum to the left
(make it smaller) and positive numbers move it to the right (make it
larger).
o The key is noticing how the sign of the number affects the sum.
B. Add fractions.
Example: Add.
(
)
Answer:
C. Identify opposites.
 What does a problem look like?
Examples: Determine the opposite of each number.
(a)
Answer: 10
(b)
Answer:

What do I need to know?
Two numbers are opposites if they add to zero (same absolute value, opposite
sign).
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MATH 0960
Section 1.6 Notes
D. Add using absolute values.
 If the signs are the same, add the absolute value of each number and use the
common sign.
 If the signs are different, subtract the absolute values and use the sign of the
number with the greater absolute value.
E. Solve application problems.
Example: A team is 109 ft. below sea level but ascends a 300 ft. climb. What is their
altitude at the end of the climb?
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