Horizontal Addition of a Chain of One-Digit Numbers

Flexible Calculation, Same Correct Answer

Although the numbers are written horizontally, you are not required to add them strictly in order. You may:

• Rearrange numbers mentally.
• Identify pairs or groups that:
  • Add up to 10, or
  • Form easy totals (such as 5 + 5, 6 + 4, 8 + 2).
• Add each group separately.
• Combine the group totals to reach the final answer.

As long as every number is included, the final sum will remain correct. This method reduces mental load and improves speed and confidence.

Configurable Worksheet Options

This addition worksheet includes configurable options that allow you to adjust the practice level based on learning needs. Before starting, you may be able to:

• Choose how many numbers appear in each addition chain, ranging from 3 to 8, or opt for a random mix of these addends.
• Control the number of problems generated, with options of 8, 16, or 24.

After selecting your preferred options, the worksheet generates a fresh set of problems instantly.

This makes the worksheet suitable for:

• Repeated practice without memorization
• Gradual difficulty progression
• Personalized learning and revision

Skills Developed Through This Worksheet

Practicing horizontal chain addition helps learners:

• Build fluency with single-digit addition
• Strengthen mental math and grouping skills
• Improve focus when working with multiple numbers
• Develop confidence using flexible calculation strategies

Online and Interactive Addition Worksheet

This is an online, interactive addition worksheet. You can type your answers directly into the input boxes provided on the page.

As you work:

• Answers are checked automatically
• Feedback is shown instantly
• Corrections can be made immediately

No printing or downloading is required.