MATH: April 6

MV
by Meghan Vismara1 view·Updated Apr 6, 2020
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  1. All right.
  2. Welcome to class today.
  3. We're gonna get started right away.
  4. Ah, we are on the area of rectangles, Blue Square.
  5. This should be on page 168 and your ultimate mass
  6. notebooks. That is underneath the green square that we did
  7. yesterday. So just says a quick review.
  8. And I know I put this video in there for
  9. you as well.
  10. Perimeter, I had to get there.
  11. All of the sides area you multi multi to multiply.
  12. I perimeter units, units stay.
  13. The the same area means square two units change area
  14. being square.
  15. Two units change.
  16. So feel free to watch that video.
  17. Make sure you've got that in your heads.
  18. That would you go after middle school?
  19. You are 100% positive on area and perimeter.
  20. Um, let's get started.
  21. So please pause this blue square.
  22. I want you to try to answer all of these
  23. questions for yourself, and then you can come back on
  24. posit and we will go through each of these questions
  25. together. Should not be too hard.
  26. One thing I want you to notice before you push
  27. pause is that some of these like this one up
  28. here and this one down here, they have two different
  29. units. Remember, you need to convert those units first before
  30. you get into a problem.
  31. All right, so now, at this point, I'm assuming you've
  32. pause this video and you're pushing play because you're ready
  33. to go through those answers with me.
  34. So this 1st 1 at the top left three inches
  35. by one inch, is three times one, which is the
  36. read. This next one is five inches by four inches.
  37. That's five times for which is 5 10 15 2020
  38. inches square.
  39. This next one is five inches by two inches.
  40. That's 5 10 5 times, too.
  41. So it's 10 inches square.
  42. This next one, like I told you, ahead of time.
  43. Ah, this one has 15 feet by five inches.
  44. So I am actually gonna take this and I'm gonna
  45. convert it all two inches, because why not?
  46. It's a little bit easier to multiply the notice to
  47. divide some taking 15 times 12 because that's how many
  48. inches are in a foot.
  49. And that's 180.
  50. They're mostly 180 by five, which is 900.
  51. So my answer here should be 900 inches square, right?
  52. So then the bottom left one.
  53. We have two feet by seven inches, so two times
  54. 12 is 20 force.
  55. That's 24 inches on top, seven inches going down seven
  56. times 24 is equal to 101 168.
  57. No end so decimal 168 inches squared.
  58. This next one shows one inch by two inch, which
  59. is one times too.
  60. So that makes two inches square, this one to my
  61. right, one inch by 17 inches that 17 inches square.
  62. But this think about it.
  63. Question. Each square equals three feet square.
  64. So each of these squares in this model is three
  65. feet. Ah, what is the area of the rectangle on
  66. the right?
  67. So all I need to do is skip count by
  68. three. However, many boxes there are.
  69. So there's 2468 10 12 14 16 boxes.
  70. Um, survive 16 boxes.
  71. 16 times three.
  72. Sorry. I'm getting a phone call from school.
  73. Hopefully, one of you is not calling me right now.
  74. And I just hung up on you.
  75. I'm so sorry.
  76. And I lost track.
  77. 2468 10 12 14 16 16 times three is 48.
  78. So it's 48 feet squared, and I'm gonna pause because
  79. someone is calling me again.