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Algebra I – Chapter 2. Integers and Properties. Integer Rules. Adding: Different signs : Find the difference and keep the sign of the larger number Ex: (-3) + (6) = (3) Same signs : Add and keep the signs Ex: (-3) + (-6) = (-9). Integer Rules. Subtracting: Add the Opposite.
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Algebra I – Chapter 2 Integers and Properties
Integer Rules • Adding: • Different signs: Find the difference and keep the sign of the larger number • Ex: (-3) + (6) = (3) • Same signs: Add and keep the signs • Ex: (-3) + (-6) = (-9)
Integer Rules • Subtracting: • Add the Opposite
Integer Rules • Multiplying and Dividing: • Different Signs:The answer is negative • Ex: (-6)(3) = (-18) • Same Sign: The answer is positive • Ex: (-4)(-5) = 20
Reflection: • What will the answer be when you multiply two numbers with the same signs? • What about when you divide two numbers with different signs? • When can associative property work?
Tonight’s Homework: Page 641 – 642 (1-91 odd)