# UA MATH 302A - Lecture Notes (16 pages)

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## Lecture Notes

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## Lecture Notes

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Pages:
16
School:
University of Arizona
Course:
Math 302a - Understanding Elementary Mathematics (A)
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Don t forget to sign in Sketch Illustrate 2 3 Agenda Exam comments After the exam Making some connections Agenda Opportunity Fraction practice Symbols Why do we use a X b for multiplication Why do we switch to a b for multiplication Why do we use c d for division Why do we switch to c d or c for division d What is cancelling really Use cancelling to solve the following 6000 20 152 8 345 5 Using our description of cancelling above solve 20 x 20 What is cancelling really Revise our description 152 8 160 8 8 345 5 340 5 5 And a connection 22 7 3 R 1 means 22 7 3 1 How are these related 5 3 1 R 2 means 5 3 1 2 20 12 1 R8 means 20 12 1 8 Explain why 5 3 5 4 3 4 without doing any calculations

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