# Place value and rounding

Contents
We've been exploring place for a while, thinking about ones, tens, and hundreds. But now we're ready to tackle all whole numbers, including numbers in the thousands, millions, and beyond!

## Intro to place value

Learn about whole number place values, create numbers with given place values, and use place value blocks to identify a number.

## How 10 relates to place value

Learn to multiply and divide whole numbers by 10. Learn how multiplying and dividing by 10 affects place value.

## Ways to write numbers (expanded form and written form)

Learn to write whole numbers in expanded form, written form, and standard form.

## Comparing multi-digit numbers

Compare whole numbers with at least 3 digits.

## Rounding whole numbers

If you're looking to create an army of robot dogs, will it really make a difference if you have 10,300 dogs, 9,997 dogs or 10,005 dogs? Probably not. All you really care about is how many dogs you have to, say, the nearest thousand (10,000 dogs). In this tutorial, you'll learn about conventions for rounding whole numbers. Very useful when you might not need to (or cannot) be completely precise. Common Core Standard: 4.NBT.A.3