Unit 1: Place Value and Whole Number Structure
 Recognize that in a multidigit whole number, a digit in one place represents ten times what it represents in the place to its right
 Use place value understanding to read, write, and compare multidigit whole numbers
 Generate and identify number and/or shape patterns.
MYSTERY NUMBER Use your place value knowledge to move those heavy number blocks and build the mystery numbers.

PLACE VALUE PUZZLER Funbrain will show you a number. Click on the digit in the number whose position is shown. Or correctly type in the rounded version of the number. 
PLACE VALLUE TO THOUSANDS This game will test your understanding of place value to the thousands place. 
EXPANDED FORM  Mathman teaches place value expanded form the fun way with this maze style math game. 
Rounding Numbers Pirate Game is a fun online activity that allows students to earn points and upgrade their ship as they try to discover the hidden treasure.

This is a crocodile rounding numbers board game. Have fun!

Math Racing Place Value Game is this fastpaced racing game, kids will identify large numbers in standard and word form.

Caterpillar Ordering. A flexible game for ordering numbers and for number sequences. 