Warm-Up Find the slope of 4y = 3x + 21 Solve -3x – 5 = x + 12

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Presentation transcript:

Warm-Up Find the slope of 4y = 3x + 21 Solve -3x – 5 = x + 12 Solve |4x + 2| > x + 3

Lesson 2.1 Operations with Numbers

Matching Game Work with your team to match up the correct answers

Properties of Real Numbers Addition Multiplication Commutative a + b = b + a ab = ba Associative (a + b ) + c = a + (b + c) (ab)c = a(bc) Identity a + 0 = a a ∙ 1 = a Inverse a + (-a) = 0 a 1 a =1

Distributive Property a(b + c) = ab + ac and (b +c)a = ba + ca

Practice Problems 42 + (3x + 7x) + 6 52 + 8 ÷ 4 – 2 5∙6÷3∙7 12 (7 – 32)2 2[14 – 3x(6-1) 2]

Homework Lesson 2.1 pg 91 # 38-70 even

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