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Multiplying A 2-digit Number By 54

Multiplying A 2-digit Number By 54

Multiplying a 2-digit number by 54

  1. Select a 2-digit number.
  2. Add one zero to the number.
  3. Subtract the original number.
  4. Multiply this by 6.
   Example:
  1. The 2-digit number chosen to multiply by 54 is 21.
  2. Add one zero: 210.
  3. Subtract original number: 210 - 21 = 190 - 1 = 189.
  4. Multiply this by 6: 6 × 189 = 6(190 - 1) = 600 + 540 - 6 = 1140 - 6 = 1134.
  5. So 54 × 21 = 1134.

   See the pattern?

  1. The 2-digit number chosen to multiply by 54 is 34.
  2. Add one zero: 340.
  3. Subtract original number: 340 - 34 = 306.
  4. Multiply this by 6: 6 × 306 = 1800 + 36 = 1836.
  5. So 54 × 34 = 1836.
Multiply and add left to right and you will be producing these products pronto.




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26 Sep, 2021, 03:12:33 AM