Download Section 1-6: Multiplying and Dividing Real Numbers

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SECTION 1-6:
MULTIPLYING AND
DIVIDING REAL
NUMBERS
PEARSON ALGEBRA I COMMON CORE
VOCABULARY SECTION 1-6
• Multiplicative Inverse- For every nonzero real
1
number a, there is a multiplicative inverse such
that 𝑎
1
𝑎
𝑎
= 1.
• Reciprocal- a nonzero real number of the form
𝑎
𝑏
𝑏
𝑎
is .
KEY CONCEPT: MULTIPLYING REAL
NUMBERS
• The product of two real numbers with different signs
is negative.
• The product of two real numbers with the same sign
is positive.
EXAMPLE 1: MULTIPLYING REAL
NUMBERS
• 6 −15
• 12 0.2
•−
7 3
10 5
EXAMPLE 2: SIMPLIFYING SQUARE
ROOTS
•
64
• ± 16
• − 121
KEY CONCEPT: DIVIDING REAL
NUMBERS
• The quotient of two real numbers with different signs
is negative.
• The quotient of two real numbers with the same sign
is positive.
• The quotient of 0 and any nonzero real number is 0.
The quotient of any real number and 0 is undefined.
EXAMPLE 3: DIVIDING REAL NUMBERS
• 24 ÷ 3
• −84 ÷ 14
EXAMPLE 4: DIVIDING FRACTIONS
•
3
4
÷ −
5
2
FORMATIVE ASSESSMENT
• HOMEWORK: PAGE 42 #’S 8-48 EVEN