Chapter 8 - Add and Subtract Fractions
In this chapter, your student is learning to add and subtract fractions and mixed numbers with like denominators. Area model and number lines are used to help students visualize the operations. The vocabulary words for this chapter are mixed number and unit fraction.
There are many real life situations in which your student can practice adding and subtracting fractions. Here are a few you may want to try.
By the end of this chapter, your student should feel confident with the learning targets and success criteria. Encourage your student to think of other fractions and mixed numbers.
Enjoy exploring addition and subtraction of fractions with your student!
Lesson |
Learning Target |
Success Criteria |
8.1 Use Models to Add Fractions |
Use area models and number lines to add fractions |
· I can use an area model to add fractions. · I can use a number line to add fractions. · I can explain what it means to add fractions. |
8.2 Decompose Fractions |
Write a fraction as a sum of fractions. |
· I can write a fraction as a sum of unit fractions. · I can write a fraction as a sum of two fractions. · I can write a fraction as a sum of fractions in more than one way. |
8.3 Add Fractions with Like Denominators |
Add fractions with like denominators. |
· I can use models to add fractions. · I can use a rule to add fractions. · I can explain how to add fractions with like denominators. |
8.4 Use Models to Subtract Fractions |
Use area models and number lines to subtract fractions. |
· I can use an area model to subtract fractions. · I can use a number line to subtract fractions. · I can explain what it means to subtract fractions. |
8.5 Subtract Fractions with Like Denominators |
Subtract fractions with like denominators. |
· I can use models to subtract fractions. · I can use a rule to subtract fractions. · I can explain how to subtract fractions with like denominators. |
8.6 Model Fractions and Mixed Numbers |
Write mixed numbers as fractions and fractions as mixed numbers. |
· I can model a mixed number. · I can write a mixed number as a fraction. · I can write a fraction greater than 1 as a mixed number. |
8.7 Add Mixed Numbers |
Add mixed numbers with like denominators. |
· I can add fractional parts and whole number parts of mixed numbers with like denominators. · I can use equivalent fractions to add mixed numbers with like denominators. · I can explain two ways to add mixed numbers with like denominators. |
8.8 Subtract Mixed Numbers |
Subtract mixed numbers with like denominators. |
· I can subtract fractional parts and whole number parts of mixed numbers with like denominators. · I can use equivalent fractions to subtract mixed numbers with like denominators. · I can explain two ways to subtract mixed numbers with like denominators. |
8.9 Problem Solving: Fractions |
Solve multi-step word problems involving fractions and mixed numbers. |
· I can understand a problem. · I can make a plan to solve. · I can solve a problem using an equation. |