1. HW # 28- Review for Mastery 3-1 & Challenge 3-1 p. 118
Week 8, Day one
HW # Review for Mastery 3-1 & Challenge 3-1 p. 118
(check your own work online when you are finished)
Warm up
Add or subtract.
a) 2.5 – b) c)
Multiply or divide.
d) e) 0.03(4.8) f) –12 ÷ 1.5

2. HW # 28- Review for Mastery 3-1 & Challenge 3-1 p. 118
Week 8, Day one
HW # Review for Mastery 3-1 & Challenge 3-1 p. 118
Warm up Response:
Add or subtract.
a) 2.5 – b) c)
Multiply or divide.
d) e) 0.03(4.8) f) –12 ÷1.5
–1.2
1920 12 6
0.144 –8

3. Homework Check Mastering the Standards p. 110 & 111 # 1-23 even 2) A
16) 2.125
18) 6
20) C=39m + 99
18 months
22) 21 ¼ ÷ ¾
85/4 * 4/3 = …

4. Goals for Today 3-1 Properties of Rational Numbers- Exploration
Commutative, Associative, Distributive
properties

6. Identifying Properties
You can remember the properties by considering the everyday meanings of commute and associate. For example, when you commute to work, you go back and forth from home to office. In the same way, the Commutative Property says that numbers can move back and forth. Similarly, the Associative Property describes how numbers may be grouped; that is, how they associate with each other.
Identifying Properties
(–4)  9 = 9  (–4) B.
(–4)  9 = 9  (–4)
The order of the numbers changed.
Commutative Property of Multiplication
The factors are grouped differently.
Associative Property of Addition
C (31)
9(31) = 9(30 + 1)
Rewrite 31 as a sum.
= (9  30) + (9  1)
Distributive Property =
Multiply.
= 279
Add.
Distributive Property