You have learned how to use addition number sentences to show parts and the whole. Today you will learn how to use subtraction number sentences to find the missing part of a whole.

There are 5 rabbits in my back yard.

Some of the rabbits go into a rabbit hole.

Out of the 5 rabbits, now I can only see 3.

How many rabbits are in the hole?

### Key Words

- difference
- minus (–)
- subtract
- subtraction sentence

### Objectives

You will

- Solve problems by writing subtraction number sentences

Objectives derived from Pearson Education programs © Pearson Education, Inc., or its affiliates. All rights reserved.

Lesson Guide

# Lesson-at-a-Glance

Topic: | Writing Subtraction Number Sentences |

Lesson: | • Read pages 12–13 with your student • Discuss and complete the Guided Practice problems on page 12 • Complete the Independent Practice on pages 13–14 |

| Quick Check |

**Key Words**

difference

minus (–)

subtract

subtraction sentence

**Essential Question**

How can subtraction sentences be used to find the missing part of the whole?

**Show 5 fingers.**

There are 5 rabbits in my back yard.

__Engage__

You have learned how to use addition number sentences to show parts and the whole. Today you will learn how to use subtraction number sentences to find the missing part of a whole.There are 5 rabbits in my back yard.

**Some rabbits go into a rabbit hole.**Put 2 fingers down.

**Out of the 5 rabbits, I can only see 3. How many rabbits are in the hole?**[

*2*]