Perfect Square Roots and Cube Roots

Perfect Squares, Square Roots, Perfect Cubes, & Cube Roots

Perfect Squares

1-1 2-4 3-9 4- 16 5-25 6-36 7-49 8-64 9-81 10-100 11-121 12-144 13-169 14-196 15-225 16-256 17-289 18-324 19-361 20-400

The 1st 20 perfect squares

A perfect square is the square of an integer

​​ What is a perfect square

Square Roots

400-20 361-19 324-18 289-17 256-16 225-15 196-14 169-13 144-12 121-11 100-10 81-9 64-8 49-7 36-6 25-5 16-4 9-3 4-2

​The first 20 square roots

The opposite of squaring a number is finding the square root. Positive numbers have 2 square Roots. Negative numbers have 0 square roots. Every number has a Square Root.

​What is a Square Root

Draw

Draw the radical sign

Perfect Cubes

1-1 2-8 3-27 4-64 5-125 6-216 7-343 8-512 9-792 10-1000 11-1331 12-1728 13-2197 14-2744 15-3375 16-4096 17-4913 18-5832 19-6859 20-8000

First 20 perfect cubes

A perfect cube is the cube an integer

​What is a perfect cube

Cube Roots

8,000-20 6,859-19 5,382-18 4,913-17 4,096-16 3,375-15 2,744-14 2,197-13 1,728-12 1,331-11 1,000-10 729-9 512-8 343-7 216-6 125-5 64-4 27-3 16-2 1-1

​The first 20 cube Roots

A cube root is the opposite of cubing a number. All integers only have 1 cube root. ∛ is used to indicate cube root.

What is a cube root

​Summary

You cannot take the square root of a negative number; you can take the cube root of a negative number.