Scientific calculators are a wonderful invention, but they're only as good as the people who use them. If you often get an unexpected - or ridiculous - result when you press the"enter' button, this unit is for you. Learn how to do a calculation correctly and get the right answer every time.
From paving your patio to measuring the ingredients for your latest recipe, squares, roots and powers really are part of everyday life. This unit reviews the basics of all three and also describes scientific notation, which is a convenient way of writing or displaying large numbers.