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Monday Math Mania!!!

Monday Math Mania!!! . 1. Take out your notebook. We have a NOTEBOOK QUIZ TODAY! 2. Warm Up: Workbook p. 52 (1-8)—be sure to LABEL your answers!!! 3. DEAR . Warm Up Answers: WB p.52 1-8. 50 miles per hour $9.40 per hour 40 pages per hour

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Monday Math Mania!!!

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  1. Monday Math Mania!!! 1. Take out your notebook. We have a NOTEBOOK QUIZ TODAY! 2. Warm Up: Workbook p. 52 (1-8)—be sure to LABEL your answers!!! 3. DEAR 

  2. Warm Up Answers: WB p.52 1-8 • 50 miles per hour • $9.40 per hour • 40 pages per hour • 3120 words per hour • 311 parts per hour • 25 books per shelf • $5 per book • 8 points per game 1 point for correct number 1 point for correct labels 2 points per answer # correct 16

  3. Notebook Quiz…Get them ready! • 15 minutes max • Use pencil • Answer completely • Write clearly Online Timer

  4. Let’s discuss strategies for each of the 4 situations… What do you think?

  5. Let’s look back at the “Similar Figures” situation from the previous page now that we have many ways to set it up… The question was: How long is the corresponding side in the similar figure? The scale factor was given as 2. How do you use the scale factor to find the corresponding length? MULTIPLY the length by 2! What is the ratio between the lengths in the similar figures? 2:1 or 1:2 Now, write a proportion for this problem and solve it. Show your work! What is the missing length? 5 cm

  6. Let’s write ALL 4 different ways to solve this on the board…

  7. Make sure your notebook assignment sheet looks like this: # DATE BRIEF DESCRIPTION • 12-5 C&S Problem 4.1, ACE 1, 2, 15-17, 23 Big Idea: Understanding Proportions You need: Calculator 4.1 Lab sheet Open your book to page 48

  8. Now We’re ready for the Problem! Let’s do Part A with a partner, then we will discuss together as a group…

  9. 20/20 = 1, so the ratios will be equivalent. She divided 180 by 9 and got 20. They are equivalent because the ratios and numerators are equivalent. Yes, she found equivalent ratios.

  10. Joey scaled up the ratios numerator - 8 x 10 x 2 = 160 denominator - 9 x 10 x 2 = 180 He made equivalent ratios.

  11. $1000 = $1250 1000x = 20 (1250) X1000x = 25,000 1000 1000 x = 25 Part20 = x x = 2120 stations Whole 100 10,600

  12. 32 / 8 x 5 = x = 20 9 / 12 x 7 = x = 5.25 25 / 5 x 7 = x = 35 3 / 9 x 8 = x = 8/3 or 2.66

  13. 3.5 x 4.6 5.2 y 5 4.6 = 5.2 = 3.5 / 4.6 x 5.2 3.96 5 / 5.2 x 4.6 ~ 4.42

  14. 48' / 8' x 5' = h' = 30' 5 8 h 48 =

  15. Make sure your notebook assignment sheet looks like this: # DATE BRIEF DESCRIPTION 12-5 C&S Problem 4.1, ACE 1, 2, 15-17, 23

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