Free printable practice
Adding Decimals 1 Digit Practice Activities
Printable Grade 5 activities for adding one-digit decimals by aligning decimal points, combining tenths, and checking sums for reasonableness.
Practice that builds confidence
What students practise
These Grade 5 math worksheets help children practise adding decimals with one digit after the decimal point. Students work with tenths, line up decimal points, add carefully, and write sums using correct place value.
The printable activities include straightforward decimal addition problems, mixed layouts, and space for showing work. They support the Decimals Addition Subtraction unit by building accuracy before students move on to longer decimal numbers.
Adding decimals with 1 digit means adding numbers written to the tenths place, such as 3.4 + 2.1 or 6.7 + 0.8. These worksheets focus on the idea that the digit after the decimal point counts tenths, so 0.5 means five tenths. Children practise combining whole numbers and tenths while keeping the decimal point in the correct position.
Concept progression
The work begins with simple sums where tenths add without crossing a whole number, then includes examples where 0.6 + 0.7 makes 1.3. This helps students connect decimal addition to familiar whole-number addition while noticing when ten tenths become one whole. Vertical problems encourage neat columns; horizontal problems ask children to rewrite or mentally align the numbers before adding.
A parent routine that works
At home, ask your child to read each number aloud using place-value language: “four and three tenths,” not just “four point three.” Have them circle the decimal points, stack the numbers if needed, add the tenths first, and then check whether the answer makes sense. A quick estimate is useful: 4.8 + 2.1 should be close to 7, not 60 or 0.69.
Classroom uses for teachers
Teachers can use these pages as independent practice after modeling decimal addition with a place-value chart or tenths grid. They also work well in math centers, small-group reteaching, morning review, or exit tickets. Because all numbers use one decimal digit, students can focus on alignment and regrouping tenths without being distracted by hundredths or thousandths.
Common errors to watch for
Some students line up the last digits instead of the decimal points, especially when one addend has fewer whole-number digits. Others forget to place the decimal point in the sum or treat tenths like separate whole numbers. Watch for answers such as 3.5 + 2.7 = 5.12; this shows a child added 5 + 7 but did not regroup 12 tenths as 1.2.
Free printable PDF download
Use this adding decimals 1 digit worksheets grade 5 page to preview the activity, print it, or download it as a PDF for quick practice. It works well for homework, homeschool lessons, tutoring, morning work, revision, and classroom centers.
Answers and answer key support
After the child completes the worksheet independently, parents and teachers can use the answer support or answer key information to check the work, review mistakes, and choose the next practice step.
Why iBloom worksheets help
The practice is narrow enough to build confidence but varied enough to reveal misunderstandings. A child-friendly strategy is: “Decimal points in a line, tenths make ten, then check with your brain.” This short routine helps students slow down, regroup when needed, and use estimation to catch unreasonable answers.
Helpful answers
Frequently asked questions
What does “adding decimals 1 digit” mean?
It means adding decimal numbers with one digit after the decimal point, such as 2.6 + 4.3. The digit after the decimal represents tenths.
Should students line up the decimal points before adding?
Yes. Lining up the decimal points keeps ones under ones and tenths under tenths, which is the most important habit for accurate decimal addition.
Do these worksheets include regrouping with tenths?
Yes. Some problems require students to recognize that ten tenths make one whole, such as 0.8 + 0.7 = 1.5.
How can I help my child check a decimal sum?
Ask your child to estimate using nearby whole numbers. For example, 5.9 + 3.2 should be close to 9, so an answer like 81 or 0.91 is not reasonable.
Are these worksheets a good step before adding longer decimals?
Yes. Practising tenths first helps students master decimal alignment, place value language, and regrouping before they add hundredths or thousandths.
Is this adding decimals 1 digit worksheets grade 5 free?
Yes. You can preview it for free and use the printable worksheet for home or classroom practice.
Can I download this adding decimals 1 digit worksheets grade 5 as a PDF?
Yes. Use the worksheet download option to save a printable PDF, or print the worksheet directly from the page.
Does this adding decimals 1 digit worksheets grade 5 include answers or an answer key?
When the activity has fixed answers, iBloom includes answer support so parents and teachers can check the completed worksheet.