module 2 lesson 15
TRANSCRIPT
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Module 2 Lesson 15AIM: Multiplication and Division of Rational Numbers
Homework:1.) Lesson 15 Problem Set2.) Exam #3 Wednesday 11/25/15
Do NowExit Ticket for Lesson 12
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Two minutesS.63
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Switch papers and solve your partner's question.
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Now change the word problem byreplacing the integers with
non-integer rational numbers(fractions or decimals), and write the
new equation.
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Multiply the absolute values of the two rational numbers.
If the two numbers (factors) have the same sign, their product is positive.
If the two numbers (factors) have opposite signs, their product is negative.
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Divide the absolute values of the two rational numbers.
If the two numbers (dividend and divisor) have the same sign, their quotient is positive.
If the two numbers (dividend and divisor) have the opposite signs, their quotient is negative.
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Problem Set #4 S.67
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Extra Examples
1.)
2.) -4 ÷ 1 25
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Space Race
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Closing:• When answering word problems today about the Grimes
Middle School Flower Fundraiser, how did you know whether to multiply or divide?
• How did you know whether to express your answer as a positive or negative number?
• In general, how does the context of a word problem indicate whether you should multiply or divide rational numbers, and how your answer will be stated?
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