Easily square numbers from 701 to 799.
Example
{% scaleimage l312_example.png %}
Step 1
Square the last 2 digits.
{% scaleimage l312_step1.png %}
Step 2
Multiply the last two digits by 14.
05 x 14 = 70
Step 3
Add two zeros to the end of step 2.
70 x 100 = 7000
Step 4
Add the results of step 1 and step 3.
7000 + 25 = 7025
Step 5
Add 490000 to the result of step 4.
490000 + 7025 = 497025
{% scaleimage lesson_underline.png %}