Addition involves finding the total of two or more numbers or amounts. There are different things you can use to help you add. You can use number lines, place value charts and place value counters.

Identifying numbers without counting & learn about place values of three-digit numbers. In this lesson, students will practice identifying numbers without counting and learn about place values of ...

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