In this Round it Up or Down Ice Cream Activity, students use place value understanding to round whole numbers to the nearest 10 or 100.

In this Scooping Up Hundreds Rounding Activity, students use place value understanding to round whole numbers to the nearest 100.

In this 5.NBT.3 Fifth Grade Common Core Lesson, studentsread, write, and compare decimals to the thousandths place in expanded form, number form, and base ten numerals.

Using thisTens Place Value Worksheet, students build their knowledge of the tens place value and the base ten system.

Using Expanding Numbers Worksheet, students write each number in expanded form to build number sense skills.

In this 5.NBT.1 Fifth Grade Common Core Lesson, students recognize that in a multi-digit number, a digit in one place represents 10 times as muchto its right and 1/10 to its left.

In this 5.NBT.2 Fifth Grade Common Core lesson, studentsexplain patterns in the number of zeros in products when multiplying and dividing by powers of 10.