Lesson 4

Add Mixed Numbers

Est. Class Sessions: 1
X

Mathematical Standards

5.NF.A
Use equivalent fractions as a strategy to add and subtract fractions. (5.NF.A.1, 5.NF.A.2)
5.NF.B
Apply and extend previous understandings of multiplication and division. (5.NF.B.4, 5.NF.B.6, 5.NF.B.7)

Standards for Mathematical Practice

MP1.
Make sense of problems and persevere in solving them.
MP2.
Reason quantitatively.
MP4.
Model with mathematics.
MP5.
Use appropriate tools strategically.
MP6.
Attend to precision.
MP7.
Look for and make use of structure.
MP8.
Look for and express regularity in repeated reasoning.

Students use fraction circle pieces to model the addition of mixed numbers and to develop paper-and-pencil procedures.

Content in this Lesson

  • Adding mixed numbers using circle pieces and paper-and-pencil methods [E8].
  • Representing addition of mixed number fractions with fraction circle pieces [E3].
  • Finding equivalent fractions [E1].
  • Finding common denominators and using them to add mixed number fractions [E10].
  • Solving word problems involving the addition of mixed number fractions [E5].
  • Simplifying fractions to simplest form [E2].
  • Estimating sums of mixed numbers [E9].
  • Finding strategies for adding mixed numbers [MPE2].
  • Checking for reasonableness [MPE3].
  • Knowing the question to answer and what is important in a word problem [MPE1].
  • Using labels to show what numbers mean [MPE6].

Daily Practice and Problems M–N

M. Fractions

N. Finding Factors

X

Materials for Students

Daily Practice and Problems Lesson Homework Assessment

Student Books

 Student Guide

Teacher Resources

 Teacher Guide - digital

Supplies for Students

  • fraction circle pieces

Materials for the Teacher

Assessment in this Lesson

Assessment Expectation Assessed Math Practices Expectation Assessed

Add Mixed Numbers
Check-In: Questions 9–13
Student Guide
Page 472
and the corresponding Feedback Box
Teacher Guide - digital
E1.
Identify and find equivalent fractions using tools (e.g., area models, number lines) and multiplication and division strategies.
E2.
Represent and identify the simplest form of a fraction using tools (e.g., area models) and multiplication and division strategies.
E8.
Add and subtract fractions including those with unlike denominators using area models and paper-and-pencil methods.
E9.
Estimate sums and differences of fractions using benchmarks and mental math strategies.
E10.
Find common denominators and use them to add, subtract, and compare fractions.
MPE2.
Find a strategy. I choose good tools and an efficient strategy for solving the problem.
MPE3.
Check for reasonableness. I look back at my solution to see if my answer makes sense. If it does not, I try again.

DPP Item M
Fractions
Teacher Guide - digital
E2.
Represent and identify the simplest form of a fraction using tools (e.g., area models) and multiplication and division strategies.
E8.
Add and subtract fractions including those with unlike denominators using area models and paper-and-pencil methods.
E9.
Estimate sums and differences of fractions using benchmarks and mental math strategies.