Space to play or pause, M to mute, left and right arrows to seek, up and down arrows for volume. Hello! Today we're going to break numbers into their parts. Numbers are written in parts. When we look ...

In fourth grade, students focus most on using all four operations - addition, subtraction, multiplication, and division - to solve multi-step word problems involving multi-digit numbers. Fourth-grade ...

Read, write, & compare multi-digit numbers using symbols including expanded form. Read and write multi-digit whole numbers using base-ten numerals, number names, and expanded form. Compare two ...