## BEATCALC:  Beat the Calculator!

Back to Calculation Tips & Tricks

 From B. Lee Clay

Squaring Numbers

Multiplying Numbers

Dividing Numbers

Subtracting Numbers

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### Multiplying a repeating 9's number by 44

1. Choose a repeating 9's number (999, etc.)
2. Multiply it by 44
3. The product is:
- the first two digits are 43
- the next digits are repeating 9's (two fewer than repeating 9's in the original number)
- the final two digits are 56

#### Example:

1. If the first number is 999:
2. First two digits are 43.
3. Next digits are repeating 9's -- two fewer than repeating 9's in the original number: 9.
4. Last two digits are 56.
5. So 44 × 999 = 43956.

See the pattern?

1. Next pick is 99999:
2. First two digits are 43.
3. Next digits are repeating 9's -- two fewer than repeating 9's in the original number: 999.
4. Last two digits are 56.
5. So 44 × 99999 = 4399956.

Use this pattern and you will be giving these products quickly and accurately.