2. SLIDE SHOW INSTRUCTIONS This presentation is completely under your control. This lesson will show only one step at a time, to see the next step you must press a key. to see the next step you must press a key. (Actual names written on a key are in green) TO STOP THE SLIDE SHOW: press ‘escape’ (Esc, top left of keyboard) TO MOVE FORWARD: press the “spacebar” or Enter (PageDn, , , also work) TO MOVE BACKWARD: press the  key (PageUp, or  also work)

3. Reducing Fractions

4. Reduce 1) Find the factors of 25 and 40 25 40 1 x 25 5 x 5 1 x 40 2 x 20 4 x 10 5 x 8 25 40 3) Divide the top and bottom of the fraction by the GCF  5 = 5 8 This fraction is now reduced to lowest terms. 2) Pick the largest number (factor) that is in both lists. This is called the (GCF) or GREATEST COMMON FACTOR GCF = 5

5. Reducing Fractions Reduce 1) Find the factors of 12 and 36 12 36 1 x 12 2 x 6 3 x 4 1 x 36 2 x 18 3 x 12 4 x 9 6 x 6 12 36 3) Divide the top and bottom of the fraction by the GCF  12 = 1 3 This fraction is now reduced to lowest terms. 2) Pick the largest number (factor) that is in both lists. This is called the (GCF) or GREATEST COMMON FACTOR GCF = 12

6. Reduce these fractions: Press enter to see solutions Answers

7. End of Tutorial Go to www.greenebox.comwww.greenebox.com for more great math tutorials for your home computer Questions? send e-mail to: lgreene1@satx.rr.com lgreene1@satx.rr.com