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Multiplying A 2-digit Number By 5 1/6

Multiplying A 2-digit Number By 5 1/6

Multiplying a 2-digit number by 5 1/6

  1. Select a 2-digit number.
  2. Multiply by 3.
  3. Add a zero.
  4. Add the original number.
  5. Divide the result by 6.
   Example:
  1. The 2-digit number chosen to multiply by 5 1/6 is 24.
  2. Multiply by 3: 3 × 24 = 72
  3. Add a zero: 720
  4. Add the original number: 720 + 24 = 744
  5. Divide by 6: 744/6 = 124
  6. So 24 × 5 1/6 = 124.

   See the pattern?

  1. The 2-digit number chosen to multiply by 5 1/6 is 41.
  2. Multiply by 3: 3 × 41 = 123
  3. Add a zero: 1230
  4. Add the original number: 1230 + 41 = 1271
  5. Divide by 6: 1271/6 = 211 5/6
  6. So 41 × 5 1/6 = 211 5/6.




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10 Dec, 2018, 09:20:40 AM