1. Properties of Numbers (day 2) Real world Problem Solving
1. Suppose you buy a shirt for $14.85, a pair of pants for $21.95 and a pair of shoes for $ Find the total amount you spent.
Problem
Order: Commutative Property
( )
Group: Associative Property
Addition
$61.95
Answer

2. D. Real world Problem Solving
2. At the supermarket, you buy a package of cheese for $2.50, a loaf of bread for $2.15, a cucumber for $.65, and some tomatoes for $ Find the total cost of the groceries.
Problem
Order: Commutative Property
( ) + ( )
Group: Associative Property
Addition
$8.80
Answer

3. E. Justify Steps
Simplify each of the following expressions. Justify each step.
5a a = a. _______________ __________________
b. _______________ __________________
c. _______________ __________________
d. _______________ __________________
5a a
Identity Prop of Mult.
5a + 1a + 6
Com. Prop. of Add.
(5 + 1)a + 6
Distributive Prop
6a + 6
Addition

4. E. Justify Steps
Simplify each of the following expressions. Justify each step.
4(x – 8) – 6x = a. _______________ _______________
b. _______________ _______________
c. _______________ _______________
d. _______________ _______________
e. _______________ _______________
f. _______________ _______________
4x – 32 – 6x
Distributive Property
4x + (–32) + (-6x)
Definition of Sub.
4x + (–6x) + (-32)
Com. Prop of add.
(4 + –6)x + (-32)
Distributive Property
–2x + (-32)
Addition
–2x - 32
Definition of Sub.

5. HOMEWORK
2-5 Day 2
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