DecimalsHundredths
Name: Date:
Add or subtract the decimals.
112.92−8.23
215.13−11.88
35.17−0.79
43.08+18.49
57.34+18.83
613.98−2.40
72.36+14.11
813.79+8.13
91.18−0.91
104.21+9.67
Adding and subtracting decimals worksheets
Adding and subtracting decimals is one skill with one rule: line up the decimal points. These free printable worksheets keep the numbers friendly so a child practices the lining-up, not big arithmetic.
If they get stuck
Adding and subtracting decimals
The answer key prints on a separate page.
What's on this sheet
The whole difficulty of decimal addition is place value — 0.4 and 0.04 look alike but are ten times apart, so the points must sit in one column. Our sheets print in a vertical form that stacks the points for you, or a horizontal form once a child is ready to keep track alone. You choose tenths or hundredths, and every pair uses the same number of places so the columns stay honest.
Why this sheet works
Answers are computed exactly, never as rounded floating-point, so 0.1 + 0.2 is always 0.3 on the key.
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 and subtracting decimals, step by step