Dividing a 2-digit number by 15

1. Select a 2-digit number.
2. Multiply it by 2.
3. Divide the result by 3.
4. Move the decimal point 1 place to the left.

   Example:

1. The 2-digit number chosen to multiply by 15 is 68.
2. Multiply by 2: 2 x 68 = 120 + 16 = 136
3. Divide the result by 3: 136/3 = 45 1/3
4. Move the decimal point 1 place to the left: 4.5 1/3
5. So 68 divided by 15 = 4.5 1/3.

   See the pattern?

1. The 2-digit number chosen to multiply by 15 is 96.
2. Multiply by 2: 2 x 96 = 180 + 12 = 192
3. Divide the result by 3: 192/3 = 64
4. Move the decimal point 1 place to the left: 6.4
5. So 96/15 = 6.4.

With this method you will be able to divide numbers by 15 with two quick calculations - one multiplication and one division.