1. Why do we break numbers into tens and ones? Choose a two-digit number and explain how partitioning it helps you understand how big it is. 2. What does the position of a digit tell us about its ...

Every commercially published book in the world is given a unique International Standard Book Number, or ISBN. On its inception in 1967, that number was 10 digits long, though it was updated to 13 ...

Build, read, write, and represent three-digit numbers using base-10 blocks and symbols. Build, read, write (in standard and expanded form), and represent three-digit numbers using base-10 blocks and ...