• 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: Developing Strategies for Problems with Sums to Twenty
  • Part 2: Sorting Sums
  • Summarizing the Lesson
  • Homework and Practice
  • Answer Keys

• Lesson 2

  • Part 1: Creating a Visual Representation of Doubling Numbers
  • Part 2: Doubles and Counting Numbers
  • Summarizing the Lesson
  • Homework and Practice
  • Literature Connection
  • Answer Keys

• Lesson 3

  • Part 1: Doubling and Halving as Inverse Operations
  • Part 2: Using Connecting Cubes to Double and Halve
  • Summarizing the Lesson
  • Homework and Practice
  • Answer Keys

• Lesson 4

  • Part 1: Doubles and Near Doubles
  • Part 2: Play Doubles, Doubles +1, Doubles −1
  • Summarizing the Lesson
  • Homework and Practice
  • Answer Keys

• Lesson 5

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

• Lesson 6

  • Part 1: True or False Number Sentences
  • Part 2: Finding Missing Numbers
  • Summarizing the Lesson
  • Homework and Practice
  • Answer Keys

• Lesson 7

  • Part 1: Build Addition Strategies Menu for Larger Numbers
  • Part 2: Practice with Addition Strategies for Larger Numbers
  • Summarizing the Lesson
  • Homework and Practice
  • Answer Keys

• Lesson 8

  • Developing the Lesson
  • 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: Build a Subtraction Strategies Menu
  • Part 2: Practice Subtraction Strategies
  • Summarizing the Lesson
  • Homework and Practice
  • Answer Keys

Lesson 9

Subtraction Strategies

Est. Class Sessions: 2

Daily Practice and Problems

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Teacher Notes

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Students may also write the number of dimes in each pocket (e.g., 1 dime, 9 dimes).

CC. 100 Cents

Tara has 100 cents in dimes. Complete the table to show different ways she can place 100 cents in dimes in two pockets. Use a 100 Chart.