arithmetic
Adding and Subtracting Decimals with Base-Ten Blocks: Add & Subtract Decimals
Add & Subtract Decimals is a no-prep digital tool for grades 4 to 6: students loop 10 tenths to SNAP them into a whole, or break a whole with a hammer, so regrouping with decimals makes sense. Tenths, hundredths, thousandths and mixed.
arithmetic
Decimal Place Value with Base-Ten Blocks and Number Lines: Build a Decimal
Build a Decimal is a no-prep digital tool for decimal place value: students build tenths, hundredths and thousandths with base-ten blocks, with wholes and parts kept apart, and see each number in words, as a fraction, in expanded form and on a number line.