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## 4th grade (Eureka Math/EngageNY)

### Unit 1: Lesson 1

Topic A: Place value of multi-digit whole numbers- Place value blocks
- Place value blocks
- Place value tables
- Place value tables
- Comparing with multiplication
- Comparing with multiplication and addition: giraffe
- Compare with multiplication
- Finding place value
- Identify value of a digit
- Creating the largest number
- Creating largest or smallest number
- Multiplying whole numbers by 10
- Multiply whole numbers by 10
- Dividing whole numbers by 10
- Divide whole numbers by 10
- Multiply and divide by 10
- Understanding place value
- Place value when multiplying and dividing by 10
- Place value when multiplying and dividing by 10
- Writing numbers in words and standard form
- Writing a number in expanded form
- Write whole numbers in expanded form
- Whole numbers in expanded form review
- Write numbers in written form
- Whole numbers in written form review
- Regrouping numbers into various place values
- Regrouping whole number place values
- Adding whole numbers by their place values
- Regroup whole numbers

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# Whole numbers in expanded form review

Review writing whole numbers in expanded form, and try some practice problems.

## Expanded form

**Expanded form**is a way to write a number by adding the value of its digits.

We can use a place value chart to think of the value of a number's digits.

### Example

Let's write start color #11accd, 7, end color #11accd, start color #7854ab, 2, end color #7854ab, start color #1fab54, 2, end color #1fab54, start color #ca337c, 9, end color #ca337c in expanded form.

Thousands | Hundreds | Tens | Ones |
---|---|---|---|

start color #11accd, 7, end color #11accd | start color #7854ab, 2, end color #7854ab | start color #1fab54, 2, end color #1fab54 | start color #ca337c, 9, end color #ca337c |

7229, equals, start color #11accd, 7, end color #11accd, start text, space, t, h, o, u, s, a, n, d, s, end text plus, start color #7854ab, 2, end color #7854ab, start text, space, h, u, n, d, r, e, d, s, end text, plus start color #1fab54, 2, end color #1fab54, start text, space, t, e, n, s, end text, plus, start color #ca337c, 9, end color #ca337c, start text, space, o, n, e, s, end text

**7229 in expanded form is start color #11accd, 7000, end color #11accd, plus, start color #7854ab, 200, end color #7854ab, plus, start color #1fab54, 20, end color #1fab54, plus, start color #ca337c, 9, end color #ca337c.**

*Want to learn more about expanded form? Check out this video.*

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