• Unit Overview

  • Letter Home
  • Unit Preparation
  • Mathematics in this Unit
  • Assessment in this Unit
  • Key Assessment Opportunities Chart
• Daily Practice and Problems
• Home Practice

• Lesson 1

  • Part 1: Making Rectangles
  • Part 2: Making a Class Chart of Rectangles
  • Summarizing the Lesson
  • Homework and Practice
  • Answer Keys

• Lesson 2

  • Developing the Lesson
  • Summarizing the Lesson
  • Homework and Practice
  • Answer Keys

• Lesson 3

  • Part 1: Finding Factors
  • Part 2: Finding More Factors
  • Part 3: Primes
  • Part 4: Using the Number Line
  • Summarizing the Lesson
  • Homework and Practice
  • Answer Keys

• Lesson 4

  • Developing the Lesson
  • Summarizing the Lesson
  • Homework and Practice

• Lesson 5

  • Part 1: Exploring Break-Apart Products
  • Part 2: Exploring Larger Break-Apart Products
  • Part 3: Writing Number Sentences for Break-Apart Products
  • Summarizing the Lesson
  • Homework and Practice
  • Answer Keys

• Lesson 6

  • Before the Lesson
  • Part 1: Jacob's Carpet
  • Part 2: Workshop
  • Part 3: Revisit Floor Tiler
  • Summarizing the Lesson
  • Homework and Practice
  • Answer Keys

• Lesson 7

  • Part 1: Grouping Factors
  • Part 2: Multiplying by Multiples of 10
  • Part 3: Exponents
  • Summarizing the Lesson
  • Homework and Practice
  • Answer Keys

• Lesson 8

  • Part 1: Finding Prime Factors
  • Part 2: Number Riddles
  • Summarizing the Lesson
  • Homework and Practice
  • Answer Keys

• Lesson 9

  • Developing the Lesson
  • Summarizing the Lesson
  • Homework and Practice
  • Answer Keys

• Lesson 10

  • Part 1: Explore Break-Apart Products with Larger Numbers
  • Part 2: Represent Break-Apart Products
  • Part 3: Solve Problems Using Expanded Form
  • Summarizing the Lesson
  • Homework and Practice
  • Answer Keys

Lesson 10

Break-Apart Products with Larger Numbers

Est. Class Sessions: 2–3

Daily Practice and Problems

X

Teacher Notes

X

TIMS Bit

1. Estimates will vary. One possible response is to count the tens to get 90, then add another 2 or 3 tens to account for the ones, giving an estimate of 110 or 120.
2. 118 blocks
3. 15 blocks

GG. Walking for Exercise

Michael and his family started walking for exercise. The table shows how many blocks they walked each day of the first week.

1. Estimate about how many blocks they walked in all that week. Show how you estimated.
2. Find the exact distance they walked in blocks. Was your estimate close?
3. What was the median number of blocks they walked in a day?