Convert from expanded form - up to hundreds

Learning Objectives Identify the hundreds, tens, and ones values in an expanded form equation. Combine hundreds, tens, and ones to write a standard three-digit number. Correctly use a zero as a placeholder when a tens or ones value is missing. Convert numbers from expanded form when the values are not in order. Explain that expanded form is a way to break a number into its place value parts. Write the standard form for any expanded number up to 999. Imagine you have a box of LEGO® bricks! 🧱 You have big, medium, and small pieces. How do you put them together to build a cool castle? 🏰 We are going to learn how to put number pieces together! This is called converting from expanded form. It helps us understand big numbers better. Real-World Applications Counting money wi...

TermDefinitionExample DigitA digit is any single number from 0 to 9. They are like number building blocks. 🧱In the number 153, the digits are 1, 5, and 3. Place ValuePlace value tells us how much a digit is worth. It depends on where it sits in a number. 🏠In 245, the 2 is in the hundreds place. It means 200. Expanded FormThis is when we stretch a number out. We show the value of each digit. ↔️The number 321 in expanded form is 300 + 20 + 1. Standard FormThis is the normal way we write numbers. It's the short and quick way! 👍The standard form for 300 + 20 + 1 is 321. Placeholder ZeroA zero that holds a place open. It's used when there are no tens or ones. 🍩In 408, the 0 holds the tens place. It means there are zero tens.

The Place Value Formula Hundreds + Tens + Ones = Standard Number Look at the expanded form. Find the hundreds, tens, and ones. Put the digits in the right places to build the number. The Placeholder Zero Rule Hundreds + 0 + Ones = H0O If you don't see a tens number (like 10, 20, 30...), you must put a 0 in the tens place.