Holt Algebra 2. All rights reserved. Name. Date. Class. LESSON. 1-2. Practice A.
Properties of Real Numbers. Find the additive inverse of each number. 1. 5. 2.
Name LESSON
1-2
Date
Class
Practice A Properties of Real Numbers
Find the additive inverse of each number. 1. 5
1 3. __ 2
2. 6.1
5
5
0
6.1
6.1
1 __ 2
1 __
0
2
0
Find the multiplicative inverse of each number. 4. 11
5. 3.5
1 ___ 11
11 ⴢ
1
2 6. ___ 3
2 __ 7
3.5 ⴢ
3 ___
2 ⴢ ___
1
2
3
1
Complete each number sentence. Make each statement true. 7. 5 7 2 5 7 5
2
8. 4 6 3
4
6 3
Identify the property demonstrated by each equation. 9. 7x x ⴢ 7
10. c 3 5 3c 5c
Commutative
Distributive 12. 0 y y
11. 4 y 1 4 y 1
Associative
Additive Inverse
Use the table for Exercises 11–14. Use properties and mental math to help you find each cost. 13. cost of a T-shirt and a hat
$16.70
The Outfit Outlet
$43.40
14. cost of 2 T-shirts and a pair of jeans
$18.80
15. cost of a pair of jeans at a 20% discount 16. total cost of one of each item
$40.20
Jeans
$23.50
T-shirt
$9.95
Hat
$6.75
Determine if each statement is sometimes, always, or never true. Give an example or property to support your answer. 17. a b c 3c
