DecimalsHundredths
Name: Date:
Add the decimals.
14.78+11.01
26.56+12.83
310.12+4.83
414.54+15.84
510.26+14.37
615.16+16.96
75.90+15.03
817.42+3.41
94.22+8.20
1012.18+1.07
Adding decimals worksheets
Adding decimals is column addition with one extra rule: the decimal points line up. These free printable worksheets stack every question with the points already aligned, so the arithmetic is what gets practiced.
If they get stuck
Adding decimals
The answer key prints on a separate page.
What's on this sheet
Line up the points and every column holds digits of the same size — tenths above tenths, hundredths above hundredths. Line up the right-hand edges instead, which is what a child trained on whole numbers will do, and 4.78 + 11.01 becomes an addition of things that are not comparable. The rule is one sentence and it is the whole topic.
Why this sheet works
Filling the short number with a zero is the other half. 6.5 + 12.83 is easier to see as 6.50 + 12.83, and writing that zero in is not cheating — it is saying that six and a half has no hundredths, which is true and worth making visible.
How this one works
One question from a sheet like this one, worked a step at a time — with a sentence saying what just happened and why.
Adding decimals, step by step