Multiplying a 2-digit number by 88

1. Select a 2-digit number.
2. Multiply it by 8.
3. Add the digits from right to left.

   Example:

1. The 2-digit number chosen to multiply by 88 is 43.
2. Multiply by 8:
   8 x 43 = 320 + 24 = 344.
3. The last digit is the same:   _ _ _ 4
4. Add the digits in 344 right to left:
   4 + 4 = 8   _ _ 8 _
   3 + 4 = 7:   _ 7 _ _
   First digit is the same:   3 _ _ _
5. So 88 x 43 = 3874.

   See the pattern?

1. The 2-digit number chosen to multiply by 88 is 82.
2. Multiply by 8:
   8 x 82 = 640 + 16 = 656.
3. The last digit is the same:   _ _ _ 6
4. Add the digits in 656 right to left:
   6 + 5 = 11   _ _ 1 _
   5 + 6 + 1 (carry) = 12:   _ 2 _ _
   First digit + 1 (carry) = 6 + 1 = 7:   7 _ _ _
5. So 88 x 82 = 7216.