Easy Multiplication Shortcut 27

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Easy Multiplication Shortcut 27

Multiplying a repeating 2's number by 66

• Select a repeating 2's number (222, etc.)
• Multiply it with 66
• The product is:
• the first two digits are 14
• the next digits are repeating 6's (two fewer than repeating 2's in the original number)
• the last two digits are 52

Ex:1
If the first number is 22222:
The product is:

• the first two digits are 14.
• the next digits are repeating 6's (two fewer than repeating 2's in the original number): 666.
• the last two digits are 52.
• Then 22222 × 66 = 1466652.

Ex:2
If the first number is 222:
Multiply with 66.
The product is:

• the first two digits are 14.
• the next digits are repeating 6's (two fewer than repeating 2's in the original number): 6.
• the last two digits are 52.
• Then 222 × 66 = 14652.

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