Download Practice A Multiplying and Dividing Real Numbers

Name ________________________________________ Date __________________ Class __________________
1.3 MULTIPLYING AND DIVIDING REAL NUMBERS
VOCABULARY
RECIPROCAL:
MULITPLICATIVE INVERSE:
FRACTION:
FACTOR:
MULITPLE:
PRODUCT:
QUOTIENT:
DIVISOR:
When multiplying or dividing, when will the product be positive?
When multiplying or dividing, when with the product be negative?
When is a fraction greater than one?
When a division problem undefined?
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Holt McDougal Algebra 1
Name ________________________________________ Date __________________ Class __________________
LESSON
1-3
Practice A
Multiplying and Dividing Real Numbers
Multiply.
1. 12 • 2
2. 4(5)
________________________
4.
1 3
•
2 4
________________________
5.
________________________
7. (5.3)(2.7)
3. 5 • 0
1
• 64
8
6. 12(0.5)
________________________
8. 7 • n for n  9
________________________
_________________________
________________________
_________________________
9. 2x for x  1
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Divide.
10. 15  3
11. 30  10
________________________
13.
2
3

5
5
________________________
16. 8  0
________________________
________________________
14.
3
 y for y  6
8
________________________
17. 
 4
4
  
9
 9
________________________
12. x  (12) for x  36
_________________________
15. 
 1
3
  
4
 4
_________________________
18. 0  (2)
_________________________
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Holt McDougal Algebra 1
Name ________________________________________ Date __________________ Class __________________
19. Mrs. Roberts changes each student’s class average
by 2 points for every day of class missed. Gina
was absent 5 days. By how much does Mrs. Roberts
change Gina’s class average?
________________________________
Evaluate each expression for a  12 and b  6.
20. a • b
21.
________________________
b
a
22.
________________________
a
b
_________________________
Evaluate each expression for c  0 and d  1.
23. cd
________________________
24.
c
d
25.
________________________
d
c
_________________________
Original content Copyright © by Holt McDougal. Additions and changes to the original content are the responsibility of the instructor.
1-21
Holt McDougal Algebra 1
Name ________________________________________ Date __________________ Class __________________
LESSON
1-3
Practice B
Multiplying and Dividing Real Numbers
Find the value of each expression.
1. 24  8
________________________
4.6(20)
3. 96  3
2. 24(5)
________________________
5. 7p for p  15
________________________
________________________
_________________________
6. t  (1.5) for t  6
_________________________
Divide.
7. 
8
2

9
3
 6
8. 12   
 25 
________________________
________________________
9. 2
 1
1
 5 
4
 3
_________________________
Multiply or divide.
10. 0 • 4.75
11. 0  10
________________________
12. 
________________________
1
0
3
_________________________
13.When Brianna’s first CD sold a million copies, her record label
gave her a $5000 bonus. She split the money evenly between
herself, her agent, her producer, and her stylist.
How much money did each person receive?
_____________________________
14. (0.3)(1.8)
________________________
15.
2  5
 
5  2
16. 15  (6)
________________________
_________________________
Original content Copyright © by Holt McDougal. Additions and changes to the original content are the responsibility of the instructor.
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Holt McDougal Algebra 1
Name ________________________________________ Date __________________ Class __________________
Evaluate each expression for x  16, y  4, and z  2.
17. y  x
________________________
20. z  y
________________________
23. x  z
________________________
18. x • y
19. xz
________________________
_________________________
22. y  z
21. (y)(z)
________________________
24. x  y
_________________________
25. z  x
________________________
_________________________
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Holt McDougal Algebra 1
Name ________________________________________ Date __________________ Class __________________
Challenge
LESSON
1-3
Multiplication and Division Puzzles
Goal: Product of –48
For puzzles 1 and 2, draw a path from the Start box to the
Finish box, multiplying by each number along the way,
to find a product equal to the goal number.
Moves must be vertical or horizontal only, and the path
cannot cross itself. An example is shown at right. The path
is correct because 2 • 1 • 3 • 2 • 1 • 2 • 2  48.
1. Goal: Product of 8
3
2
1
1
3
2
2
Start
4
2
Finish
2. Goal: Product of 120
1
1
2
1
3
2
2
Start
2
1
2
4
1
1
2
1 Finish
5
Start
3
2
Finish
For puzzles 3 and 4, draw a path from the Start box to the Finish box,
dividing by each number along the way, to find a quotient equal to the
goal number. Moves must be vertical or horizontal only, and the path
cannot cross itself.
3.
4. Goal: Quotient of 3
Goal: Quotient of 1
4
3
2
36
Start
2
3
24
Start
3
2
3
2
3
1
2
4
2
1
Finish
2 Finish
Original content Copyright © by Holt McDougal. Additions and changes to the original content are the responsibility of the instructor.
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Holt McDougal Algebra 1