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Worksheets›Grade 6›Number system›Adding & subtracting decimals

Adding & Subtracting Decimals Worksheets

Free printable worksheets with answer keys. Pick a level, preview the questions, then open the sheet to swap or delete any single question.

Grade 6CCSS 6.NS.B.3Answer key includedPDF · Print
Open in generatorStart with an easy sheet

Easy: Tenths, totals under 100

  1. 1.32.6 + 31.1 =
  2. 2.20.3 + 19.7 =
  3. 3.15.6 − 2.3 =
  4. 4.20.2 − 8.7 =
  5. 5.31.4 − 11.6 =
  6. 6.20.8 + 36.3 =
Preview shows 6 of 12 questions. Every sheet is new; open it to change any question.

Worksheet variations

Line up the decimal points, fill empty places with zeros, then add or subtract as with whole numbers.

Easy48.2 − 20.1 =Tenths, totals under 100Medium51.39 − 18.9 =Tenths and hundredths mixedHard391.5 − 97.049 =Up to thousandths, with regrouping

How to solve it: a worked example

Add or subtract.

  1. Start46.4 − 38.9 =
  2. Line up the decimal points46.4 − 38.9
  3. Then= 7.5
  4. Answer7.5

Common mistakes to watch for

  • Lining up the last digits instead of the decimal points.
  • Forgetting to regroup across the decimal point when subtracting.
  • Dropping the decimal point from the answer.

Tip: tick “Step-by-step answer key” in the generator to print each step for marking.

Related worksheets

Dividing fractionsMultiplying decimalsDividing decimalsGreatest common factorLeast common multiple

FAQ

Is every worksheet different?

Yes. Numbers are generated each time, and the answer key is calculated for that sheet. Swap any single question and its answer updates too.

Can I mix adding & subtracting decimals with other skills?

Yes. In the generator, add more skills; each gets its own section on the sheet with its own instructions.

Is it free to print?

Yes. Generating and printing from the browser is free with no sign-up. PDF downloads need a free account.