# Multidigit Arithmetic +/ –

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The lessons provides students with a step-by-step strategy for adding or subtracting large numbers. Students should already be familiar with place value, as it is stressed repeatedly throughout the lesson. The lesson can be used in conjunction with other addition and subtraction lessons.

## Multidigit Arithmetic +/ – Lesson Plan Includes:

• Full Teacher Guidelines with Creative Teaching Ideas
• Instructional Content Pages about Multidigit Arithmetic +/ –
• Hands-on homework activities giving students practice on Multidigit Arithmetic +/ –
• Common Core State Standards

*Note: These lessons are PDF downloads. You will be directed to the download once you checkout. Clarendon Learning resources are FREE, we rely 100% on donations to operate our site. Thank you for your support!

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### Description

The lessons provides students with a step-by-step strategy for adding or subtracting large numbers. Students should already be familiar with place value, as it is stressed repeatedly throughout the lesson. The lesson can be used in conjunction with other addition and subtraction lessons.

### Classroom Instruction:

1. Begin by explaining to students that it is important to know how to add and subtract large numbers such as how many people in each state voted for president.
2. While reading the content pages, reinforce place value and give students additional examples of regrouping and decomposing in order to help them practice the new algorithm. Use the additional resources to enhance understanding.
3. Introduce the notes on multi-digit arithmetic. Have students practice problems with and without regrouping and decomposing.  Use the additional resources to enhance understanding.
4. Have students practice problems and show all their work.
5. Follow Activity page with students. Have students work individually or in pairs.  If they work in pair, have them check their answers with one another.
6. Distribute Practice page. Check and review the students’ responses as a class.
7. Distribute the Homework page. Have students share some of the places that they found large numbers.
8. In closing, ask students to tell you the most important part of adding or subtracting large numbers.
9. Allow for responses and discussion.

Common Core State Standards:

CCSS.Math.Content.3.NBT.A.2, CCSS.Math.Content.4.NBT.B.4

Class Sessions (45 minutes): 1 class session