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Multiplying a 2-digit number by
2 2/9
Select a 2-digit number.
Multiply by two.
Add one zero.
Divide by nine.
Example:
The 2-digit number chosen to multiply by 2 2/9 is 31.
Multiply by 2: 2 x 31 = 62
Add one zero: 620
Divide by 9: 620/9 = 68 8/9
So 31 x 2 2/9 = 68 8/9.
See the pattern?
The 2-digit number chosen to multiply by 2 2/9 is 74.
Multiply by 2: 2 x 74 = 148
Add one zero: 1480
Divide by 9: 1480/9 = 164 4/9
So 74 x 2 2/9 = 164 4/9.
Those using calculators will have difficulty entering
2 2/9 (2.222222...) and their results may be repeating decimals.
Your steps will produce exact results.