Dividing a 2- or 3-digit number by 25

1. Select a 2-digit number. (Choose larger numbers when you feel sure about the method.)
2. Multiply by 4 (or by 2 twice).
3. Move the decimal point two places to the left.

   Example:

1. The 2-digit number chosen to divide by 25 is 38.
2. Multiply by 4: 4 x 38 = 4 x 30 = 120 + 32 = 152.
3. Move the decimal point 2 places to the left: 1.52
4. So 38 divided by 25 = 1.52.

   See the pattern?

1. The 3-digit number chosen to divide by 25 is 641.
2. Multiply by 2 twice:
   2 x 64 = 1282.
   2 x 1282 = 2400 + 164 = 2564.
3. Move the decimal point 2 places to the left: 25.64.
4. So 641 divided by 25 = 25.64.

Practice multiplying left to right or by 2 twice and you will be able to do these computations quickly and accurately.