5th Grade Adding and Subtracting Decimals Worksheet
Add and subtract decimals by lining up the decimal points and filling empty places with zeros.
- Homework
- Review
- Test Prep
- Tutoring
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- Grade
- 5th Grade
- Subject
- Math
- Skill
- Decimals
- Topic
- adding and subtracting decimals to hundredths
- Difficulty
- Standard
- Time
- 16 minutes
- Pages
- 2 (incl. answer key)
- Format
- Printable PDF (US Letter)
- Answer key
- Included
- Best for
- homework, review, test prep, tutoring
Worksheet details
What This Worksheet Practices
Students will add and subtract decimals to hundredths by lining up the decimal points.
- Lining up decimal points
- Adding zeros to make equal place values
- Bringing the decimal point down into the answer
Worksheet Preview
It all comes down to lining up the point
Adding and subtracting decimals uses the same steps as whole numbers, with one rule on top: line up the decimal points, not the last digits. When the decimals have different lengths (0.5 and 0.25), write 0.5 as 0.50 so every place has a partner. Then add or subtract column by column and bring the decimal point straight down.
How to use it
Have students stack the numbers by the decimal point and fill empty places with zeros before they compute. This is the same logic as lining up place value in whole-number addition — and the same “line up the point” idea makes money math (dollars and cents) work. Builds on comparing decimals.
👩🏫 Teacher note
The whole skill is alignment: line up the decimal points, not the right-hand digits. Writing 0.5 as 0.50 keeps columns even.
🏠 Parent note
Stack the numbers so the decimal points line up, add a zero if one number is shorter, then add or subtract as usual.
Common Mistakes to Watch For
- Lining up the last digits instead of the decimal points
- Forgetting to bring the decimal point straight down into the answer
Answer Key
Each answer shows the sum or difference.
⬇ Download Answer Key (PDF)Related Worksheets
Comparing Decimals Worksheet
Compare decimals to the hundredths with <, >, or =, lining up place value instead of counting digits.
Dividing Decimals Worksheet
Divide a decimal by a whole number, bringing the decimal point straight up into the answer.
Multiplying Decimals Worksheet
Multiply decimals, then place the decimal point by counting the decimal places in both factors.
Rounding Decimals Worksheet
Round decimals to the nearest whole number and the nearest tenth using the 'look right' rule.
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