Activity
Homeschool Math

Homeschool Math: Decimal Place Value: One Decimal Digit

For Students 4th
This is a complete lesson with instruction and varied exercises, explaining how the place value system works with decimals that have one decimal digit, and how to write such decimals in expanded form.
Unit Plan
Khan Academy

Khan Academy: Decimals in Words

For Students 3rd - 5th Standards
Practice writing decimal numbers in word form and number form. Students receive immediate feedback and have the opportunity to try questions repeatedly, watch a video or receive hints.
Unit Plan
PBS

Pbs Learning Media: Rounding to Whole Numbers

For Teachers 3rd - 5th Standards
This interactive lesson focuses on using what you know about number lines and rounding from the tenths place to make decimals whole numbers and then asks you to explain your reasoning to show comprehension.
Interactive
Calculator Soup

Calculator Soup: Rounding Numbers Calculator

For Students 9th - 10th
Rounding calculator teaches how to round numbers up or down to any decimal place. Choose ones to round a number to the nearest dollar. Choose hundredths to round an amount to the nearest cent.