1. KU122: Introduction to Math Skills and Strategies Prof. Susan DiMarino Unit 4 Seminar

2. Announcements/Reminders You can retake ONE of the MML Quizzes (there are 4 total). You must e-mail me if/when you want to take a quiz over. You MUST show EACH of the steps in your project to get full credit. You can either show it in words or using numbers/symbols.

3. Slide 4- 3 Copyright © 2008 Pearson Education, Inc. Publishing as Pearson Addison- Wesley Ratio A ratio is the quotient of two quantities. For every 50 chicks raised, 3 die within the first two days. The ratio of the number of chicks that die to the number raised is shown by fraction notation

4. Slide 4- 4 Copyright © 2008 Pearson Education, Inc. Publishing as Pearson Addison- Wesley Ratio Notation The ratio of a to b is given by the fraction notation, where a is the numerator and b is the denominator, or by the colon notation a : b.

5. Slide 4- 5 Copyright © 2008 Pearson Education, Inc. Publishing as Pearson Addison- Wesley Rate When a ratio is used to compare two different kinds of measure, we call it a rate.

6. Slide 1- 6 Copyright © 2008 Pearson Education, Inc. Publishing as Pearson Addison- Wesley Section 4.1 1.Write fraction notation for the ratio 56 to 81. a) b) c) d)

7. Slide 1- 7 Copyright © 2008 Pearson Education, Inc. Publishing as Pearson Addison- Wesley Section 4.1 1.Write fraction notation for the ratio 56 to 81. a) b) c) d)

8. Slide 1- 8 Copyright © 2008 Pearson Education, Inc. Publishing as Pearson Addison- Wesley Section 4.1 3. On a map, 1 ½ inches represents 45 miles. If two cities are 5 in. apart on the map, how far are they apart in reality? a) 91 miles b) 150 miles c) 225 miles d) 338 miles

9. Slide 1- 9 Copyright © 2008 Pearson Education, Inc. Publishing as Pearson Addison- Wesley Section 4.1 3. On a map, 1 ½ inches represents 45 miles. If two cities are 5 in. apart on the map, how far are they apart in reality? a) 91 miles b) 150 miles c) 225 miles d) 338 miles

10. Slide 1- 10 Copyright © 2008 Pearson Education, Inc. Publishing as Pearson Addison- Wesley Section 4.2 1. Find decimal notation for 19%. a) 0.019 b) 0.19 c) 1.9 d) 19

11. Slide 1- 11 Copyright © 2008 Pearson Education, Inc. Publishing as Pearson Addison- Wesley Section 4.2 1. Find decimal notation for 19%. a) 0.019 b) 0.19 c) 1.9 d) 19

12. Percent and Fraction Notation Tell me ways that we use percent notations in our everyday lives:

13. Slide 1- 13 Copyright © 2008 Pearson Education, Inc. Publishing as Pearson Addison- Wesley Section 4.2 2. Find percent notation for 0.382. a) 0.382% b) 3.82% c) 38.2% d) 382%

14. Slide 1- 14 Copyright © 2008 Pearson Education, Inc. Publishing as Pearson Addison- Wesley Section 4.2 2. Find percent notation for 0.382. a) 0.382% b) 3.82% c) 38.2% d) 382%

15. Slide 1- 15 Copyright © 2008 Pearson Education, Inc. Publishing as Pearson Addison- Wesley Section 4.3 1. Find percent notation for a) 21% b) 23.8% c) 42% d) 105%

16. Slide 1- 16 Copyright © 2008 Pearson Education, Inc. Publishing as Pearson Addison- Wesley Section 4.3 1. Find percent notation for a) 21% b) 23.8% c) 42% d) 105%

17. Slide 1- 17 Copyright © 2008 Pearson Education, Inc. Publishing as Pearson Addison- Wesley Section 4.3 2. Find fraction notation for 12.5%. a) b) c) d)

18. Slide 1- 18 Copyright © 2008 Pearson Education, Inc. Publishing as Pearson Addison- Wesley Section 4.3 2. Find fraction notation for 12.5%. a) b) c) d)

19. Slide 1- 19 Copyright © 2008 Pearson Education, Inc. Publishing as Pearson Addison- Wesley Section 4.4 1. What is 35% of 70? a) 24.5 b) 35 c) 50 d) 200

20. Slide 1- 20 Copyright © 2008 Pearson Education, Inc. Publishing as Pearson Addison- Wesley Section 4.4 1. What is 35% of 70? a) 24.5 b) 35 c) 50 d) 200

21. Slide 1- 21 Copyright © 2008 Pearson Education, Inc. Publishing as Pearson Addison- Wesley Section 4.4 2. What percent of 32 is 28? a) 114% b) 87.5% c) 80% d) 70%

22. Slide 1- 22 Copyright © 2008 Pearson Education, Inc. Publishing as Pearson Addison- Wesley Section 4.4 2. What percent of 32 is 28? a) 114% b) 87.5% c) 80% d) 70%

23. Slide 1- 23 Copyright © 2008 Pearson Education, Inc. Publishing as Pearson Addison- Wesley Section 4.5 1. 9 is 25% of what? a) 225 b) 36 c) 12 d) 2.25

24. Slide 1- 24 Copyright © 2008 Pearson Education, Inc. Publishing as Pearson Addison- Wesley Section 4.5 1. 9 is 25% of what? a) 225 b) 36 c) 12 d) 2.25

25. Slide 1- 25 Copyright © 2008 Pearson Education, Inc. Publishing as Pearson Addison- Wesley Section 4.6 1. A person earns $31,400 one year and receives a 4% raise in salary. What is the new salary? a) $37,500 b) $35,400 c) $34,540 d) $32,656

26. Slide 1- 26 Copyright © 2008 Pearson Education, Inc. Publishing as Pearson Addison- Wesley Section 4.6 1. A person earns $31,400 one year and receives a 4% raise in salary. What is the new salary? a) $37,500 b) $35,400 c) $34,540 d) $32,656

27. Slide 1- 27 Copyright © 2008 Pearson Education, Inc. Publishing as Pearson Addison- Wesley Section 4.7 1. The sales tax on a television is $48.75 and the sales tax rate is 6.5%. Find the purchase price (price before taxes are added). a) $317 b) $553 c) $750 d) $799

28. Slide 1- 28 Copyright © 2008 Pearson Education, Inc. Publishing as Pearson Addison- Wesley Section 4.7 1. The sales tax on a television is $48.75 and the sales tax rate is 6.5%. Find the purchase price (price before taxes are added). a) $317 b) $553 c) $750 d) $799

29. Slide 1- 29 Copyright © 2008 Pearson Education, Inc. Publishing as Pearson Addison- Wesley Section 4.7 2. A fax machine normally retails for $165, but is now on sale 18% off. What is the sale price? a) $147.00 b) $135.30 c) $123.05 d) $29.70

30. Slide 1- 30 Copyright © 2008 Pearson Education, Inc. Publishing as Pearson Addison- Wesley Section 4.7 2. A fax machine normally retails for $165, but is now on sale 18% off. What is the sale price? a) $147.00 b) $135.30 c) $123.05 d) $29.70

31. Slide 1- 31 Copyright © 2008 Pearson Education, Inc. Publishing as Pearson Addison- Wesley Section 4.7 3. What is the simple interest on a principal of $640 at the interest rate of 3.8% for 1 year? a) $24.32 b) $54.32 c) $92.42 d) $168.42

32. Slide 1- 32 Copyright © 2008 Pearson Education, Inc. Publishing as Pearson Addison- Wesley Section 4.7 4. Find the amount in the account if $2000 is invested at 6 1/8% compounded annually for 2 years. a) $2252.50 b) $2246.83 c) $2245.00 d) $2007.50

33. Slide 1- 33 Copyright © 2008 Pearson Education, Inc. Publishing as Pearson Addison- Wesley Section 4.7 4. Find the amount in the account if $2000 is invested at 6 1/8% compounded annually for 2 years. a) $2252.50 b) $2246.83 c) $2245.00 d) $2007.50

34. Unit 4 Assignments The following assignments are due by 11:59pm ET on Tuesday: 1.) Live seminar 2.) Discussion 3.) Practice Problems 4.) MML Ungraded Tutorials 5.) MML Quiz