Multiplying Two digit Numbers With difference of 8

1. Choose a 2-digit number.
2. Select a number either 8 smaller or 8 larger.
3. Find the middle number of the two (the average).
4. Square this middle number (multiply it by itself).
5. Subtract 16 from this square.

Example:

1. If the first number is 34, choose 26 as the second number (8 smaller).
2. The middle number (the average) is 30.
3. Square this middle number: 30 × 30 = 900.
4. Subtract 16 from this square: 900 - 16 = 884.
5. So 34 × 26 = 884.