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2.2 – 2.4 Adding and Subtracting Real Numbers

2.2 – 2.4 Adding and Subtracting Real Numbers. Objective : To add and subtract integers, including negative numbers. Warm – up : Complete each sentence with a word that makes the sentence true. Even + Even = ________ Even + Odd = ________ Odd + Odd = ________ Even ∙ Even = ________

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2.2 – 2.4 Adding and Subtracting Real Numbers

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  1. 2.2 – 2.4 Adding and Subtracting Real Numbers • Objective: To add and subtract integers, including negative numbers. • Warm – up: Complete each sentence with a word that makes the sentence true. • Even + Even = ________ Even + Odd = ________ • Odd + Odd = ________ Even ∙ Even = ________ • Even ∙ Odd = ________ Odd ∙ Odd = ________

  2. 2.2 – 2.4 Adding and Subtracting Real Numbers Simplify each expression. (-1) + 5 -11 + (-10) + 10 + 9 7 + (-9) + 15 + (-12) -321 + 231 + (-123) + 312 15 + (-12) + 9 + 6 + (-22) • |-7| • |-7| + |3| • |-8| – |5| • -(|3| + |-4|) • -(|4| – |1|)

  3. 2.2 – 2.4 Adding and Subtracting Real Numbers Definition of Subtraction Simplify 9 – 12 3 – (-4) -6 – (-10) -y – (-y + 4) • For all real numbers a and b, the differencea – b is defined by:a – b = a + (-b) • To subtract b, add the opposite of b.

  4. 2.2 – 2.4 Adding and Subtracting Real Numbers Simplify each expression. -(f + 8) -(-b + 6 – a) m – (-n + 3) • 4 + 5y + 3 • 277 + 93 + 23 + 7 • 12 + 4p + 3

  5. 2.2 – 2.4 Adding and Subtracting Real Numbers Simplify: Homework: Pg. 52 Written Exercises #2 – 20 even, 26 – 34 even Pg. 56 Written Exercises#9 – 12, 15, 16, 23 – 37 odd • -(x + 14) • 5 – (x + 8) • n – (n – 5) • -(10 – k) – (k – 12)

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