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Example 6-6b Objective Multiply integers

Example 6-6b Vocabulary none

Example 6-6b Multiply/Divide Rules for Integers 1. Same sign Positive answer 2. Opposite signs Negative answer

Lesson 6 Contents Example 1Multiply Integers with Different Signs Example 2Multiply Integers with Different Signs Example 3Multiply Integers with the Same Sign Example 4Multiply Integers with the Same Sign Example 5Simplify and Evaluate Expressions Example 6Simplify and Evaluate Expressions

Example 6-1a Answer: –20 Find different 5(4) /6 Write problem Draw arrows to the signs Determine if the signs are the same or different Multiply the numbers without the signs 5  4 Different signs, negative answer

Example 6-1b Answer: –15 Find 1/6

Example 6-2a Answer: –27 Find -3(9) different 3(9) /6 Write problem Draw arrows to the signs Determine if the signs are the same or different Multiply the numbers without the signs 3  9 Different signs, negative answer

Example 6-2b Answer: –35 Find 2/6

Example 6-3a Answer: 48 Find -6(-8) same 6(8) 48 3/6 Write problem Draw arrows to the signs Determine if the signs are the same or different Multiply the numbers without the signs 6  8 Same sign, positive answer

Example 6-3b Answer: 28 Find 3/6

Example 6-4a Answer: 49 Find Write problem (-7) 2 Remember: the exponent of 2 means to multiply the base times itself (-7)(-7) (7)(7) same 49 4/6 Draw arrows to the signs Determine if the signs are the same or different Multiply the numbers without the signs 7  7 Same sign, positive answer

Example 6-4b Answer: 25 Find 4/6

Example 6-5a ALGEBRA Simplify Write problem -5(-7x) Remember: According to the Associative Property of Multiplication we can rearrange the factors so combine “like terms” -5(-7)x Multiply “like terms” -5(-7) 5/6 Draw arrows to the signs Determine if the signs are the same or different same

Example 6-5a ALGEBRA Simplify Answer: 35x -5(-7x) -5(-7)x -5(-7) 5(7) 35 x 5/6 same Multiply the numbers without the signs 5  7 Same sign, positive answer Bring down the variable

Example 6-5b ALGEBRA Simplify Answer: –48x 5/6

Example 6-6a ALGEBRA Evaluate (-3) 6/6 abc Write problem Remember: when variables are together it means multiply Replace a with - 3 putting the number in parenthesis to multiply Replace b with 5 (5) Replace c with -8 (-8) Multiply the first 2 numbers

Example 6-6a ALGEBRA Evaluate (-3) different 3(5) 15 (-8)- 6/6 abc (5)(-8) Draw arrows to the signs of the first 2 numbers Determine if the signs are the same or different Multiply the numbers without the signs 3  5 Different signs, negative answer Bring down the (-8)

Example 6-6a ALGEBRA Evaluate (-3) different 3(5) 15 (-8)- 6/6 abc (5)(-8) Draw arrows to the signs Determine if the signs are the same or different Multiply the numbers without the signs 15  8 Same signs, positive answersame 15(8) 120 Answer: 120

Example 6-6b ALGEBRA Evaluate Answer: 48 * 6/6

End of Lesson 6 Assignment Lesson 3:6Multiplying Integers All