Lesson 3

Estimate Products

Est. Class Sessions: 3
X

Mathematical Standards

5.NBT.A
Understand the place value system. (5.NBT.A.2)

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.
MP5.
Use appropriate tools strategically.
MP6.
Attend to precision.

Students use multiplication strategies (arrays and the commutative property) along with estimation strategies (rounding, convenient numbers, benchmarks, and range) to estimate products of big numbers.

Content in this Lesson

  • Using multiple strategies for estimating products [E8].
  • Using strategies to estimate quantities (e.g., rounding, using benchmarks) [E3].
  • Multiplying numbers that are multiples of ten [E7].
  • Finding the value of unknowns to make number sentences true.
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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 Student Pairs

  • calculator

Assessment in this Lesson

Assessment Expectation Assessed Math Practices Expectation Assessed

Estimate Products
Check-In: Questions 15–17
Student Guide
Page 141
E3.
Use strategies to estimate quantities (e.g., rounding, using benchmarks).
E7.
Multiply numbers that are multiples of ten represented as powers of ten (e.g., 64,320 = 6 × 104 + 4 × 103 + 3 × 102 + 2 × 101 + 0; 300,000 = 3 × 105).
E8.
Estimate products
  

Frank's Weight in Gold
Check-In: Question 3
with Feedback Box
Student Activity Book
Pages 132–133
E3.
Use strategies to estimate quantities (e.g., rounding, using benchmarks).
E8.
Estimate products
MPE2.
Find a strategy. I choose good tools and an efficient strategy for solving the problem.
MPE5.
Show my work. I show or tell how I arrived at my answer so someone else can understand my thinking.