In this unit, you will work through the perfect squares and square roots. Perfect squares and square roots of perfect squares should be numbers that you commit to memory as this memorization will lead to quick answers later. You may wish to create flashcards with the answers on the back to assist in your memorization. You can keep the cards and practice anytime.
You will also apply your knowledge of square roots and estimation to approximate non-perfect square roots. Non-perfect square roots are irrational numbers, decimal numbers that never end and do not develop into a repeating pattern.
Squares and Square Roots (06:30) 
