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Cube Roots

cubed<br>8th grade math<br>math 8<br>middle school math <br>pre algebra

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Cube Roots

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  1. March 2, 2022

  2. Warm up- Estimate the

  3. ANSWERS- Estimate the

  4. 49 50 51 52 53 54 55 56 57 58 59 60 61 62 63 64

  5. Answer Final answer: 7 4 15 1 2 3 4 49 50 51 52 53 54 55 56 57 58 59 60 61 62 63 64 7 squared 8 squared It is 15 units from 49 to 64, because 64-49=15. The fraction will be 15ths.

  6. 1 36 121 256 4 49 144 289 324 9 64 169 16 81 196 361 25 100 225 400

  7. Cube Roots I can find cube roots of rational numbers. The lesson will explain how to: • find cube roots of rational numbers. • solve equations involving cube roots. Click here here to view the instructional video. Use the video from about 6:30 to 10:40.

  8. Cube Roots I can find cube roots of rational numbers. The lesson will explain how to: • find cube roots of rational numbers. • solve equations involving cube roots.

  9. What do you see? What questions can you come up with?

  10. Cube Roots

  11. Cube Roots Sketch your drawing in the box.

  12. Cube Roots

  13. Cube Roots Now let's write the equation for this example.

  14. Cube Roots Now let's write the equation for this example.

  15. Cube Roots

  16. Cube Roots Sketch your drawing in the box.

  17. Cube Roots

  18. Cube Roots Now let's write the equation for this example.

  19. Cube Roots Now let's write the equation for this example.

  20. Cube Roots

  21. Cube Roots

  22. Cube Roots Now let's write the equation for this example.

  23. Cube Roots Now let's write the equation for this example.

  24. Cube Roots

  25. Cube Roots I can find cube roots of rational numbers. The lesson will explain how to: • find cube roots of rational numbers • solve equations involving cube roots Click here here to view the instructional video. Use the video from about 6:30 to 10:40.

  26. Notes Pages Ask yourself? What is it asking me? (Area or Volume)

  27. Notes Pages Ask yourself? What is it asking me? (Areaor Volume)

  28. Notes Pages Ask yourself? What is it asking me? (Areaor Volume) Area= L x W

  29. Notes Pages Ask yourself? What is it asking me? (Areaor Volume) Area= L x W 121 =

  30. Notes Pages Ask yourself? What is it asking me? (Areaor Volume) Area= L x W 121 = The side length of the bulletin board is 11in.

  31. Notes Pages Ask yourself? What is it asking me? (Area or Volume)

  32. Notes Pages Ask yourself? What is it asking me? (Area or Volume)

  33. Notes Pages Ask yourself? What is it asking me? (Area or Volume) volume= L x W x H Cube root( 3 )

  34. Notes Pages Ask yourself? What is it asking me? (Area or Volume) volume= L x W x H Cube root ( 3 of the same number times itself) The side length of the sculpture is 5in.

  35. Notes Pages Ask yourself? What is it asking me? (Area or Volume)

  36. Notes Pages Ask yourself? What is it asking me? (AreaorVolume)

  37. Notes Pages Ask yourself? What is it asking me? (Areaor Volume) Area= L x W

  38. Notes Pages Area= L x W

  39. Notes Pages Ask yourself? What is it asking me? (Area or Volume) volume= L x W x H Cube root ( 3 of the same number times itself) The side length of the square is 6cm.

  40. Notes Pages Ask yourself? What is it asking me? (Area or Volume)

  41. Notes Pages Ask yourself? What is it asking me? (Area or Volume)

  42. Notes Pages Ask yourself? What is it asking me? (Area or Volume) volume= L x W x H Cube root( 3 )

  43. volume= L x W x H Cube root ( 3 of the same number times itself) The side length of the create is 8ft.

  44. Notes Pages

  45. Notes Pages 49-36= 13units (denominator) 36 to 42= 6 units(numerator) 6.46 Answer: yes she does have enough

  46. Practice Problem

  47. Practice Problem #1 - Answer 4 x 4 x 4 = 64

  48. Practice Problem Did you notice the word CUBE in the problem above? Always read carefully!!

  49. Practice Problem - Answer 5 I will use an organized list to find my answer: 1 x 1 x 1 = 1 2 x 2 x 2 = 8 3 x 3 x 3 = 27 4 x 4 x 4 = 64 5 x 5 x 5 = 125

  50. Practice Problem Notice key word in the question: CUBIC

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