Fraction Cheat Sheets - mymathplanner.com

1 Copyright 2002 Senari Cheat SheetsFraction Cheat Sheets provide you with a tool for teaching your studentsnote-taking, problem-solving, and organizational skills in the context ofmath lessons. This set of prepared Cheat Sheets includes detailedprocedures for each of the four operations with fractions and prepared Sheets are designed to give you classroom-testedprocedures which you can use to help your students master conceptsdealing with fractions. Each sheet comes in two versions: with andwithout an example problem.

2 Use the version without the example if youwant to make an overhead transparency and/or if you want your studentsto write their own SheetBasic Concepts1 - 8 Adding Fractions9 - 12 Adding Mixed Numbers13 15 Subtracting Fractions16 18 Subtracting Mixed Numbers19 22 Multiplying Fractions23 24 Multiplying Mixed Numbers25 26 Dividing Fractions27 29 Dividing Mixed Numbers30 - 32 Copyright 2002 Senari CheatSheet 5 Concept V: Convert MixedNumbers to FractionsTo convert a mixed number to a Fraction :1.

3 The denominator remains the same. (D = D)2. Multiply the whole number by the denominator and add thenumerator to get the new numerator. (N2 = D x W + N1)Mixed Numbers to Fractions - ExamplesN1N2WD=D21443=3 Copyright 2002 Senari CheatSheet 9 Adding Fractions I1. Write the problem The denominator stays the Add the numerators to get the new Fractions I - Examples246!!!! Step 37+7=7!!!! Step 2 Step 1 Copyright 2002 Senari CheatSheet 21 Subtracting MixedNumbers III1. Write the problem If the denominators are the same, copy the whole numbersand the Change each Fraction so that the LCD is the Enter the denominator in the Borrow from the whole Subtract the numerators to get the new Subtract the whole Mixed Numbers III - ExamplesStep 1 Steps 2and 35!

4 Step 556=6544- 45=- 451 Step 7 "15! Step 6! Step 4 Copyright 2002 Senari CheatSheet 26 Multiplying MixedNumbers II1. Write the problem Change mixed numbers to improper fractions. Rewrite Cancel if possible. When canceling one number must be anumerator, and the other a denominator. (If you canceleverything you can, your answer will be Multiply the numerators to get the new Multiply the denominators to get the new If the Fraction is improper, change it to a mixed Mixed Numbers II ExamplesStep 1 Steps 2and 3 Step 423311822224x15=4x5=5=451 Step 5 Step 6 Copyright 2002 Senari CheatSheet 29 Dividing Fractions III1.)

5 Write the problem Invert the second term and change the Cancel if possible. When canceling one number must be anumerator, and the other a denominator. (The answer will bereduced if everything is cancelled.)4. Multiply the numerators to get the new Multiply the denominators to get the new If the divisor is smaller than the dividend, the Fraction will beimproper. Change it to a mixed Fractions III - ExamplesStep 1 Steps 2 + 3 Step 41539 320 5 24 20=4x9=3= 13! Step 613 Step 5