Decimals

Your first exposure with decimals might have been the cash register at the store. The readout $1.50 meant one dollar bill and five dimes.

Below are some of the more commonly used decimals that tend to appear in Geometry and Trigonometry.

• 0.25 = 1/4
• 0.5 = 1/2
• 0.75 = 3/4

The following include square roots:

• 0.7071…. =
• 0.8660…. =