Miscellaneous:

Perfect Squares

Here are the squares of the first 20 counting numbers. Should you memorize them? Well, you should DEFINITELY know the squares of 1 through 10. Knowing the squares of 11 through 20 is also a good idea because that will improve your speed, which is helpful during the Sprint Round--and critical during the Countdown Round.

• 1² = 1
• 2² = 4
• 3² = 9
• 4² = 16
• 5² = 25
• 6² = 36
• 7² = 49
• 8² = 64
• 9² = 81
• 10² = 100
• 11² = 121
• 12² = 144
• 13² = 169
• 14² = 196
• 15² = 225
• 16² = 256
• 17² = 289
• 18² = 324
• 19² = 361
• 20² = 400