Easy Multiplication Shortcut 12

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Easy Multiplication Shortcut 12

Multiplying two 2-digit numbers (difference of 1)
1.Choose a 2-digit number.
2.Select a number either 1 smaller or 1 larger.
3.Square the larger number (multiply it by itself).
4.Subtract the larger number from the product.
5.Square the smaller number (multiply it by itself).
6.Add the smaller number to the product. Pick the easier one to square.

If the first number is 32, choose 31 as the second number.
32 × 32 = 1024 (square the larger).
1024 - 32 = 992 (subtract the larger).
Then 32 × 31 = 992.

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