In this unit, students use place value to compare, order, and round multi-digit numbers. They use place value concepts and grouping and ungrouping methods to add and subtract multi-digit numbers. Students also practice and build fluency with the multiplication and division facts they learned in 3rd grade.

Unit 1 • Unit 2 • Unit 3 • Unit 4
Unit 5 • Unit 6 • Unit 7 • Unit 8

There are two Family Letters for Unit 1.
Currently available translations are linked below.

Learn about different computation methods students will use during this unit.