# Module 16: Subtract Large Numbers-Math 2A - Course Guide

## Module Overview:

In this module, students will subtract larger numbers using a hundred chart, subtract a number from a three-digit number, and subtract larger numbers by regrouping. They will write a subtraction equation to fit a story problem and complete a subtraction sentence by inserting the correct digits to make the equation true.

## Module Materials:

Lesson # Lesson Title Material(s)
1 Subtract on a Hundred Chart crayons or colored pencils
pen or pencil
2 Subtract from a Three-Digit Number crayons or colored pencils
pen or pencil
3 Subtract Three-Digit Numbers crayons or colored pencils
pen or pencil
4 Write a Subtraction Equation crayons or colored pencils
pen or pencil
scissors
glue
5 Find the Numbers scissors
crayons or colored pencils
pen or pencil

Module Objectives:

Lesson # Lesson Title Objective(s)
1 Subtract on a Hundred Chart
1. Subtract larger numbers using a hundred chart.
2 Subtract from a Three-Digit Number
1. Subtract a number from a three-digit number.
3 Subtract Three-Digit Numbers
1. Subtract larger numbers by regrouping.
4 Write a Subtraction Equation
1. Write a subtraction equation to fit a story problem.
5 Find the Numbers
1. Complete a subtraction sentence by inserting the correct digits to make the equation true.

Module Key Words:

Key Words
Hundred chart
Regroup
whole
part
guess and check
fact families

Module Assignments:

Lesson # Lesson Title Page # Assignment Title
1 Subtract on a Hundred Chart 4 Hands-On
2 Subtract from a Three-Digit Number 4 Hands On
3 Subtract Three-Digit Numbers 4 Hands-On
4 Write a Subtraction Equation 4 Hands-On
5 Find the Numbers 4 Hands-On

None

## Module Guiding Questions:

When a student starts a lesson ask them questions to check for prior knowledge and understanding and to review concepts being taught. At the end of the lesson ask the questions again to see if their answer changes.

Lesson Title Question
Subtract on a Hundred Chart
1. How can you use a hundred chart to subtract?
Subtract from a Three-Digit Number
1. How do you subtract 3-digit numbers?
Subtract Three-Digit Numbers
1. Can you find the difference in word problems?
Write a Subtraction Equation
1. How do you know which subtraction equation fits the story problem?
Find the Numbers
1. Do you know how to find missing numbers in a subtraction problem?

## Module Video Questions:

When a student watches a video take time to ask them questions about what they watched. Suggested questions for the videos in this module are listed here. Suggestion: Have the student watch the entire video first all the way through. Then have them watch the video a second time, as they watch it pause the video and ask the questions.

Lesson Title Video Question

## Module Suggested Read Aloud Books:

Take time to read to your student or have them read aloud to you. Read a different book each day. While reading the book point out concepts being taught. You may purchase these books or find them at your local library. Suggested things to discuss while reading the book:

• What is the main idea?
• What are three things new you learned?
• How does this book relate to what you are learning about?

# Book Author Lexile Level

## Module Outing:

Take some time to apply what your student is learning to the real world. Suggested outings are below.

# Outing