Multiplying a 2-digit number by 6 2/3

1. Select a 2-digit number.
2. Multiply the number by 2.
3. Add a zero.
4. Divide by 3.

   Example:

1. The 2-digit number chosen to multiply by 6 2/3 is 63.
2. Multiply by 2: 2 x 63 = 126.
3. Add a zero: 1260.
4. Divide by 3: 1260/3 = 420.
5. So 63 x 6 2/3 = 420.

   See the pattern?

1. The 2-digit number chosen to multiply by 6 2/3 is 41.
2. Multiply by 2: 2 x 41 = 82.
3. Add a zero: 820.
4. Divide by 3: 820/3 = 273 1/3.
5. So 41 x 6 2/3 = 273 1/3.

If the number chosen is divisible by three, the answer will be a whole number. If not, a calculator will get only an approximation, but your answer will be correct.