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Wednesday, January 4 th

Wednesday, January 4 th. Warm Up. Get a new warm up template from the front Please write down the Homework. Solve for x in each proportion 1. 2. New Seating Chart . Corny Joke of the Day. Why did Columbus go to jail? Because he double-crossed the ocean. Einstein’s Of the Month.

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Wednesday, January 4 th

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  1. Wednesday, January 4th Warm Up Get a new warm up template from the front Please write down the Homework Solve for x in each proportion 1. 2.

  2. New Seating Chart

  3. Corny Joke of the Day Why did Columbus go to jail? Because he double-crossed the ocean

  4. Einstein’s Of the Month

  5. Please hand in your goal sheet 

  6. How do we convert decimals, fractions, and percents? Math Discussion

  7. % % % % % Percents % % % % % % % % %

  8. What is a percent? • A percent is a ratio…how many times out of a hundered 45 percent means 45 out of 100 possible times! 45 = 45 % 100

  9. Percents to Fractions Conversion 1

  10. How can you turn a percent into a fraction?

  11. Percentages can be written as a fraction by simply placing them over 100!

  12. 30 % 40 % 12 % 99 % 101 % 3/10 2/5 3/25 99/100 1 1/100 Write these percents as fractions. Be sure to simplify 

  13. Dude… That was easy

  14. Percents to Decimals Conversion 2

  15. Steps • Since I can put all percents over a hundred then all I need to do is write the equivalent decimal. • Move your decimal place over to the LEFT twice! 20 = 0.20 20 % = 100

  16. 12 % 8 % 75 % 48 % 120 % 0.12 0.08 0.75 0.48 1.20 You try…Percent to Decimal

  17. Fractions to Percents Conversion 3

  18. Group Discussion • How would you convert each fraction to a percent? • Which fraction is easier to convert and why? 5/25 vs. 2/7

  19. Setting it up Set up a ratio!!!

  20. What percent is 5/40? 40 · P = 5 · 100 40P = 500 5 P = 500 = 12.5 % 40 100 40

  21. 4/100 2/5 3/4 2/3 2 1/2 4 % 40 % 75 % 66.6 % 250 % Your turn…

  22. Decimals to Fractions Conversion 4

  23. Steps • Whatever place value the fraction ends in is your DENOMINATOR • Make sure to simplify! • From here you can go easily into PERCENTS!!!! Why is that?

  24. 43 43 % 0.43 = = 100 10P = 300 3 P 0.3 = = 300 10 100 10 P = 30 %

  25. Complete Table

  26. Summary • When you make a decimal a percent you can really move the decimal _______ places to the ___________. • When you make a fraction a percent you want to make an equivalent fraction that has a denominator of _____________________.

  27. Percent Memory In your groups, play memory! You must get a match of fraction to percent or decimal to percent

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