Lesson 9

Estimate Fraction Sums

Est. Class Sessions: 1–2
X

Standards for Mathematical Practice

MP1.
Make sense of problems and persevere in solving them.
MP2.
Reason quantitatively.
MP3.
Construct viable arguments and critique the reasoning of others.
MP4.
Model with mathematics.
MP5.
Use appropriate tools strategically.

Students determine approximate amounts of fractional parts in the context of a celebratory pizza party. They use circle pieces and number lines to figure out whether amounts are close to benchmarks of 1/2 or 1 whole.

Content in this Lesson

  • Estimating sums of fractions using benchmarks, circle pieces, and number lines [E9].

Daily Practice and Problems EE–FF

EE. Compare Fractions

FF. Pencils and Erasers

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Materials for Students

Daily Practice and Problems Lesson Homework Assessment

Student Books

 Student Guide
Student Activity Book      

Teacher Resources

 Teacher Guide - digital      

Supplies for Students

  • fraction circle pieces

Materials for the Teacher

Assessment in this Lesson

Assessment Expectation Assessed
Estimate Fraction Sums
Check-In: Questions 8–9
Student Guide
Page 88
E9.
Use benchmark fractions to estimate sums and differences and assess the reasonableness of answers.

Vocabulary in this Lesson