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Adding decimals

Printable adding decimals drills for grades 4–5. Each page has one line telling the student what to do and 12 or 16 numbered problems, with an answer key numbered the same way, so checking takes a minute.

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Sample sheet and answer key

Adding decimals

Tenths · 12 problems

NameDate

Line up the decimal points, then add.

  1. 1.
    69.3+ 31.9
  2. 2.
    92.1+ 59.5
  3. 3.
    78.8+ 29.5
  4. 4.
    83.8+ 9.6
  5. 5.
    99.1+ 2.2
  6. 6.
    88.9+ 53.6
  7. 7.
    83.2+ 3.3
  8. 8.
    67.8+ 19.5
  9. 9.
    61.8+ 15.7
  10. 10.
    88.6+ 3.4
  11. 11.
    57.5+ 51.5
  12. 12.
    51.6+ 15.6
Mathness! Math Worksheets · © 2026 Zubin KhavarianCode D-DATENTHS-FIRST at mathness.app
Sheet

Adding decimals

Tenths · 12 problems

Answer key

Line up the decimal points, then add.

  1. 1.
    69.3+ 31.9101.2
  2. 2.
    92.1+ 59.5151.6
  3. 3.
    78.8+ 29.5108.3
  4. 4.
    83.8+ 9.693.4
  5. 5.
    99.1+ 2.2101.3
  6. 6.
    88.9+ 53.6142.5
  7. 7.
    83.2+ 3.386.5
  8. 8.
    67.8+ 19.587.3
  9. 9.
    61.8+ 15.777.5
  10. 10.
    88.6+ 3.492.0
  11. 11.
    57.5+ 51.5109.0
  12. 12.
    51.6+ 15.667.2
Mathness! Math Worksheets · © 2026 Zubin KhavarianCode D-DATENTHS-FIRST at mathness.appAnswer key
Answer key

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