Subcategories

• Module 4 Day 1 Challenge Part 1

  Converting Between Decimals and Percents

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• Module 4 Day 1 Challenge Part 2

  Percent Changes in Price

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  U

  Notice how if we were to sort our numbers in order we get 0.7955 0.7965 0.7975 0.7985 and 0.7995. Each 0.0010 away from each other with 0.7975 as the middle. Note then how 0.7955 + 0.7995 = 2(0.7975) and 0.7965 + 0.7985 is also equal to 2(0.7975) with this we get a simple 5 * 0.7975 which greatly simplifies things in this problem. This gets us the final 3.9875. Sure, this calculation is not easy to make, but it can still be simplified with 50.8 - 50.0025 this gets us 4 - 0.0125 = 3.9875. This I feel is generally easier to do in this case, please correct me if I got something wrong here. 😄

• Module 4 Day 1 Challenge Part 3

  Difference of Squares

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  A

  @the-blade-dancer Thank you for catching that!! I've passed it on 🙂

• Module 4 Day 1 Challenge Part 4

  Trick for Multiplying Numbers Ending in 5

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• Module 4 Day 1 Your Turn Part 1

  Compound Percent Change, Repeated Squaring

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• Module 4 Day 1 Your Turn Part 2

  Expanding (x + y)²

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• Module 4 Day 1 Your Turn Part 3

  Small-Number Approximations

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• Module 4 Day 1 Your Turn Part 4

  Application to Computer Data Storage

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  T

  Ah, ok. I signed up for MOAA and AMC 8 and I'm trying to go through as many modules as I can, so some days I'll be doing something and some days I'll be doing the other.