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Published byDavid Griffin Modified over 9 years ago

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Two Rules: 1. To add numbers with the same sign, ADD the absolute values and the answer has the same sign as the original numbers. EXAMPLE: 3 + 16 = 19 -3 + -5 = -8 2. To ADD numbers with different signs, SUBTRACT the absolutes values and the answer has the same sign as the number with the largest absolute value. EXAMPLE: -3 + 7 = 7 - 3 = 4 -5 + 2 = 5 - 2 = -3 4 + -10 = 10 – 4 = -6

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The OPPOSITE of a number is also called its ADDITIVE INVERSE. So Subtracting is ADDING THE INVERSE! In Algebra: a - b = a + (-b) OR a minus b equals a plus the opposite of b. EXAMPLES: 6 - 11 = 6 + (-11) = -5

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Page 76: # 3-15: Handout: 2.2 Practice: Adding and Subtracting Rational Numbers

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Page 76 #22-52 EVENS

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