Easily square numbers from 60 to 69.
Example
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Step 1
Square the ones place digit.
{% scaleimage l303_step1.png %}
Step 2
Multiply the ones place digit by 12.
4 x 12 = 48
Step 3
Add a zero to the end of step 2.
48 x 10 = 480
Step 4
Add the results of step 1 and step 3.
480 + 16 = 496
Step 5
Add 3600 to the result of step 4.
496 + 3600 = 4096
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