Adding Decimals Worksheets
Stacked addition with the decimal points lined up, the way the algorithm is taught. Both numbers have the same number of decimal places (one, two or three by setting), so the column alignment is clean and the carrying works exactly as it does with whole numbers. Sums regularly cross into the next whole number, and the key keeps trailing zeros (16.50, not 16.5) so the places stay visible.
Ready-made PDFs
One-click downloads, answer key included, a different puzzle in each.
FAQ
Do the numbers always have the same number of decimal places?
On this page, yes: that keeps the columns aligned for students learning the method. Ragged decimals (3.5 + 2.75) are a later step; adding a zero to make them match is exactly what you would teach from this page.
Do the downloads include answer keys?
Yes, every PDF ends with a key page that repeats the layout with the answers in green. Turn the Answer key switch off for a problems-only file.
Can I get different versions for each student?
Turn on the 5 versions switch before downloading. You get five different sheets in one PDF, each with its own answer key, so neighbouring desks cannot copy.
Why does the key write 16.50 instead of 16.5?
To keep the hundredths place visible, so students can check column by column. Either form is correct.
Can students work these on a tablet?
Yes. Practice online puts a pen tool over the same sheet, so answers can be written with a stylus or finger and wiped for another try.
How do I print this decimals worksheet?
Click Download PDF and print at 100% scale. The page is already sized for US Letter with printer-safe margins, so no fit-to-page fiddling is needed.