Place Value

Unit Review Sheet

Facts and Definitions

Lesson 1: Three-Digit Place Value Review

• Ones place: position on the right in a number
• Tens place: position to the left of the ones place
• Hundreds place: position to the left of the tens place
• Expanded form: a way to write a number that shows the value of each digit (for example, 4529=4000+500+20+9)

Lesson 2: Numbers to 10,000

• Thousands place: position to the left of the hundreds place

Lesson 3: Rounding to 10 and 100

• Rounding: the process of making a number simpler to work with but keeping its value close to the original number

Lesson 4: Using Rounding to Estimate

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Lesson 5: Adding Four-Digit Numbers

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Lesson 6: Subtracting Four-Digit Numbers

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Lesson 7: Unit Test

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Final Project: Place Value Board Game

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