Chapter 7 Add and Subtract Fractions

In Chapter 7 students will: 

• Build fractions from unit fractions by applying and extending previous understandings of operations on whole numbers

Vocabulary:

• fraction – a number that names part of awhile or part of a group

• numerator - the part of a fraction above the line which tells how many parts are/not being counted

• denominator – the part of the fraction below the line which tells how many equal parts there are in a whole or a group

• mixed number – an amount given as a whole number and a fraction (3 1/2)

• unit fraction – a fraction that has a numerator of one

• simplest form - a fraction in which the numerator and denominator have only 1 as a common factor

• Associative Property of Addition - the property that states that when the grouping of addends is changes, the sum is the same 

• (ex. 7 + 3 + 2 = (7+3) + 2 or (3+2) + 7)

• Commutative Property of Addition - the property that states that when the order or two or more addends is changes, the sum is the same

• (ex. 3 + 4 = 4 + 3)

Chapter 7 videos:

Lesson 7.1 Add and Subtract Parts of a Whole 

Lesson 7.2 Write Fractions as Sums 

Lesson 7.3 Add Fractions Using Models 

Lesson 7.4 Subtract Fractions Using Models 

Lesson 7.5 Add and Subtract Fractions 

Lesson 7.6 Rename Fractions and Mixed Numbers 

Lesson 7.7 Add and Subtract Mixed Numbers 

Lesson 7.8 Subtraction with Renaming 

Lesson 7.9 Fractions and Properties of Addition 

Lesson 7.10 Multi-step Fraction Problems