Bits and Pieces II: Investigation 2: Adding and Subtracting Fractions 
MMS Math
Essentials &
Vocabulary Vocabulary on this page Parents Help Links on this page Textbook Investigation 2 
Decimals
Fractions
Fraction Pieces – Work with parts and wholes to learn about fractions.  
Fractions  Adding – Illustrates what it means to find a common denominator and combine.  
Fractions  Comparing – Judge the size of fractions and plot them on a number line.  
Fractions  Equivalent – Illustrates relationships between equivalent fractions.  
Fractions  Rectangle Multiplication – Visualize and practice multiplying fractions using an area representation. 
Percents
Percent Grids – Represent, name, and explore percentages using hundreds grids.  
Percentages – Discover relationships between fractions, percents, and decimals. 
Vocabulary 
Picture  Vocabuary 
Equivalent
Fractions: Fractions that have the same simplest form. 

Hundredths Grid: a 10 by 10 grid 

reduce: to put a fraction isn simpler form 

reciprocal: two numbers whose product is 1. Easily gotten by 'flipping' the numerator & denominator. i.e. 2 * 1/2 = 1 

Fraction: Part of a whole number. Written in the form of a numerator and denominator  
Numerator: The part of the whole being used  
Denominator: The whole of the fraction. The number of equal pieces in the whole.  
Common Denominator: When two fractions have the same denominator. Used for addtion and subtraction operations. 