IB Mathematics SL Prep

Category - IB Mathematics

What is 5/12?
  1. .41666
  2. .42
  3. .4333
  4. .41333
  5. .415
Explanation
Answer: 5/12 is .41666. The 6s repeat forever.

Key Takeaway: Things frequently come in dozens, so dividing by 12 in case interviews can be quite common.

1/12 = .083333
5/12 = .41666
7/12 = .58333
11/12 = .916666

There is a bit of a pattern in there, but we don’t think it’s helpful to try to use a pattern. Rather, just take the time to memorize these 4 decimals. The rest can be reduced.

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