GlossaryC


 * Commutative Property of Addition**: you will get the same sum on either side on the equal sign. A+B = B+A

**Constants:** meaning fixed or not changing- a term or expression with no variables. Example -3, 1/12 or 52.

**Coefficient:** The number in front of the variable. Example: 4y means 4 times y, and y is a variable, so 4 is the coefficient.

**Common Denominator:** It is when you have two or more fractions that have the same denominator. In order to add or subtract fractions. you have to have same denominator on both fractions. for example 1/5+2/5. If you need to find a common denominator, then you simply multiply the denominators together. After doing that, then you multiply the numerators by the same number as you did their denominators. (What you do to the denominator, you must do the same to the numerator.) Example: 3/4+5/8...Multiply both denominators by each other, so four by eight, and eight by four, so that you get 32 as the common denominator. Then multiply the three by eight as well, because that's what you did to its denominator, and multiply five by four. You should end up with 15/32+20/32, and then you add them together and reduce.

**Converting Decimals into fractions:** Taking 3.04 and moving it into a fraction is easy. You take the 3 and make it the whole number. Now the 4 is the numerator you need to see what place value it is. Seeing it in the hundredths place you put it over a hundred. It should look like this : 3 4/100

**Converting Mixed numbers into Improper Fractions**: You take the denominator and mulitply it to the hole number and add the top to it. You take the final number and put it all over the original denominator. 3 4/5 looks like this 3*5=15 +4= **19/5**

**Circumference of a Circle:** the formula is 2 times pi times the radius.
 * Converting Improper Fractions into Mixed Numbers:** You take the denominator and see how many times it will go into the numerator that number becomes your whole number. Then you take the remainder and put that over the denominator. Ex. 95/6 becomes 15 5/6