Name ______Date ______

Math 6/7 Unit 3A Study Guide

Directions: Review over the notes with examples below. And then complete the following activities to help you prepare for the test.

Adding and Subtracting Fractions Steps:

1)  Find the Least Common Denominator

  1. The LCD of 5 and 7 is 35

2)  Using the new denominator, make the fractions into new equivalent fractions

3)  Add or subtract
4)  Simplify if needed; write improper fractions as mixed numbers
  1. Answer is already in simplest form

Subtracting Fractions When Regrouping is Necessary:

1)  Find the Least Common Denominator

  1. The LCD of 5 and 7 is 35

2)  Using the new denominator, make the fractions into new equivalent fractions

3)  Regroup the first fraction so that you have enough to take away
4)  Add or subtract
5)  Simplify if needed; write improper fractions as mixed numbers
  1. Answer is already in simplest form

Multiplying Fractions

1)  Change any mixed numbers into improper fractions

  1. =

2)  Multiply the numerators

  1. =306

3)  Multiply the denominators

4)  Simplify if needed; write improper fractions as mixed numbers
Dividing Fractions
1)  Change any mixed numbers into improper fractions
  1. =

2)  Multiply by the multiplicative inverse

3)  Multiply the numerators
  1. 17 7 = 119

4)  Multiply the denominators

  1. 5 18 = 90

5)  Simplify if needed; write improper fractions as mixed numbers

What to do to review:

o  Make sure you have completed all of the Suggested Homework assignments on the worksheet given at the beginning of the unit almost 3 weeks ago.

o  Review over the Integer Notes sheet I passed out last week.

o  Review over workbook page assignments.

o  Go over all notes taken in class.

o  Go over all PowerPoint presentation notes that were given in class. They are now all located on my blog for reviewing purposes.

o  Practice at the following websites:

o  http://www.aaastudy.com/fra.htm

o  http://www.funbrain.com/cgi-bin/getskill.cgi?A1=gba&A2=11&A7=0

§  Scroll down to the fractions soccer game

o  http://www.mathsisfun.com/fractions-menu.html

o  http://www.mathsisfun.com/whole-numbers.html

o  http://www.aaastudy.com/add65_x3.htm

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