Splash Screen. Lesson Menu Five-Minute Check (over Lesson 1–2) Then/Now New Vocabulary Key Concept: Properties of Equality Key Concept: Addition Properties.

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Splash Screen. Lesson Menu Five-Minute Check (over Lesson 1–2) Then/Now New Vocabulary Key Concept: Properties of Equality Key Concept: Addition Properties.

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Presentation transcript:

Splash Screen

Lesson Menu Five-Minute Check (over Lesson 1–2) Then/Now New Vocabulary Key Concept: Properties of Equality Key Concept: Addition Properties Key Concept: Multiplication Properties Example 1:Evaluate Using Properties Key Concept: Commutative Property Key Concept: Associative Property Example 2: Real-World Example: Apply Properties of Numbers Example 3:Use Multiplication Properties

Over Lesson 1–2 A.A B.B C.C D.D 5-Minute Check 1 A.42 B.38 C.11 D.2 Evaluate the expression 20 – 6 3.

Over Lesson 1–2 A.A B.B C.C D.D 5-Minute Check 2 A.50 B.25 C.14 D.2 Evaluate the expression 2(15 + 3) – 11 2.

Over Lesson 1–2 A.A B.B C.C D.D 5-Minute Check 3 A.17 B.18 C.20 D.21

Over Lesson 1–2 A.A B.B C.C D.D 5-Minute Check 4 A.170 B.165 C.160 D.125

Over Lesson 1–2 A.A B.B C.C D.D 5-Minute Check 5 A.16 units 2 B.32 units 2 C.62 units 2 D.80 units 2 The area of a parallelogram is the product of its base and height. What is the area of the parallelogram when n = 3?

Over Lesson 1–2 A.A B.B C.C D.D 5-Minute Check 6 A.48 B.68 C.72 D.156 Simplify 40 ÷ (13 – 7).

Then/Now You used the order of operations to simplify expressions. (Lesson 1–2) Recognize the properties of equality and identity. Recognize the Commutative and Associative Properties.

Vocabulary equivalent expressions additive identity multiplicative identity multiplicative inverse reciprocal

KC 1

KC 2

KC 3

Example 1 Evaluate Using Properties Name the property used in each step. Substitution: 12 – 8 = 4 Substitution: 15 ÷ 5 = 3 Substitution: 3 – 2 = 1

Example 1 Multiplicative Identity: 3 (1) = 3 = 4Substitution: = 4 Multiplicative Inverse: (4) = 1 Answer: 4 Evaluate Using Properties

A.A B.B C.C D.D Example 1 A.4 B.5 C.1 D.0

KC 4

KC 5

Example 2 Apply Properties of Numbers HORSEBACK RIDING Migina made a list of trail lengths to find the total miles she rode. Find the total miles Migina rode her horse. Bent TreeKnob HillMeadowrunPinehurst

Example 2 = Commutative (+) = ( ) + ( )Associative (+) = Substitution = 27.50Substitution Answer: Migina rode 27.5 miles on the trails. Apply Properties of Numbers

A.A B.B C.C D.D Example 2 A.4.5 mi B.5.5 mi C.6.0 mi D.6.2 mi TRANSPORTATION Darlene rode the city train from the Winchester Street Station to the airport. How far did she travel on the train?

Example 3 Use Multiplication Properties Evaluate 2 ● 8 ● 5 ● 7 using properties of numbers. Name the property used in each step. You can rearrange and group the factors to make mental calculations easier. Answer: ● 8 ● 5 ● 7= 2 ● 5 ● 8 ● 7Commutative (×) = (2 ● 5) ● (8 ● 7)Associative (×) = 10 ● 56Substitution. = 560Substitution.

A.A B.B C.C D.D Example 3 A.45 B.36 C.15 D.180 Evaluate 3 ● 5 ● 3 ● 4.

End of the Lesson