Post on 31-Mar-2015
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0-5 Multiplying and Dividing Rational Numbers
0-5Multiplying and Dividing Rational Numbers
Five-Minute Check
Then/Now
New Vocabulary
Example 1:Write a Verbal Expression
Key Concept: Translating Verbal to Algebraic Expressions
Example 2:Write Algebraic Expressions
Real-World Example 3: Write an Expression
0-5Multiplying and Dividing Rational Numbers
You performed operations on integers. (Lesson 0-3)
• Write verbal expressions for algebraic expressions.
• Write algebraic expressions for verbal expressions.
0-5Multiplying and Dividing Rational Numbers
• algebraic expression
• variable
• term
• factor
• product
• power
• exponent
• base
0-5Multiplying and Dividing Rational Numbers
Write Verbal Expressions
A. Write a verbal expression for 8x2.
Answer: eight times x squared
0-5Multiplying and Dividing Rational Numbers
Write Verbal Expressions
B. Write a verbal expression for y5 – 16y.
Answer: the difference of y to the fifth power and 16 times y
0-5Multiplying and Dividing Rational Numbers
A. A
B. B
C. C
D. D0% 0%0%0%
A. 7 times a
B. 7 times the product of 4 and a
C. 7 times a to the fourth power
D. 4 times a to the seventh power
A. Write a verbal expression for 7a4.
0-5Multiplying and Dividing Rational Numbers
A. 7 times a
B. 7 times the product of 4 and a
C. 7 times a to the fourth power
D. 4 times a to the seventh power
A. Write a verbal expression for 7a4.
0-5Multiplying and Dividing Rational Numbers
A. A
B. B
C. C
D. D0% 0%0%0%
A. the sum of 3 and x
B. the product of x squared and 3
C. the sum of x and 3 squared
D. the sum of x squared and 3
B. Write a verbal expression for x2 + 3.
0-5Multiplying and Dividing Rational Numbers
A. the sum of 3 and x
B. the product of x squared and 3
C. the sum of x and 3 squared
D. the sum of x squared and 3
B. Write a verbal expression for x2 + 3.
0-5Multiplying and Dividing Rational Numbers
Write Algebraic Expressions
A. Write an algebraic expression for 5 less than a number c.
The words less than suggest subtraction.
Answer: Thus, the algebraic expression is c – 5.
a number c less five
c – 5
0-5Multiplying and Dividing Rational Numbers
Write Algebraic Expressions
B. Write an algebraic expression for 9 plus the product of 2 and d.
Plus implies add, and product implies multiply.
Answer: The expression can be written as 9 + 2d.
0-5Multiplying and Dividing Rational Numbers
Write Algebraic Expressions
C. Write an algebraic expression for two fifths of the area a.
The word of implies multiply.
0-5Multiplying and Dividing Rational Numbers
A. 9 – h
B. 9 + h
C. 9h
D. h – 9
A. Write an algebraic expression for nine more than a number h.
0-5Multiplying and Dividing Rational Numbers
A. 6 – 4x
B. (6 – 4)x
C. 6 + 4x
D. 6x – 4
B. Write an algebraic expression for the difference of 6 and 4 times a number x.
0-5Multiplying and Dividing Rational Numbers
A. 2p
B. .
C. p2
D. p
C. Write an algebraic expression for one half the size of the original perimeter p.
0-5Multiplying and Dividing Rational Numbers
Write an Expression
ENTERTAINMENT Mr. Nehru bought two adult tickets and three student tickets for the planetarium show. Write an algebraic expression that represents the cost of the tickets.
Answer: The cost of the tickets is represented by 2a + 3c.
Let a be the cost of each adult ticket and c be the cost of each student ticket. The cost of the adult tickets is represented by 2a and the cost of the student tickets is represented by 3c.
0-5Multiplying and Dividing Rational Numbers
A. 20 – p
B. p – 20
C. 20 + p
D. 20 p
MONEY Lorenzo bought a bag of peanuts that cost p dollars and he gave the cashier a $20 bill. Write an expression for the amount of change that he will receive.