Addition
Large mixed-digit addition
Add two, three, or four mixed-width values with five-, six-, or seven-digit selections and multiple regrouping steps.
Preview and downloadAddition practice
Large-number addition
Add two, three, or four values with five, six, or seven digits while maintaining alignment across long columns.
Ready-made English PDF · fixed settings
Customization below makes a separate PDF.
Fixed English ready-made files. Custom settings below apply only to the configured PDF.
Ready to print
Start with a ready-made worksheet
Align the ones places, estimate the total, add each column from right to left, and compare the exact sum with the estimate.
Download the practice pages alone, or include a separate answer key or teacher model. Longer activities may use more than one page.
Customize this worksheetLearning objective
What this activity builds
Add large whole numbers accurately and evaluate the result with estimation.
Worked example
What is 1,245,600 + 378,945 + 20,070?
1,644,615
Add aligned ones through millions, recording each carry; the result agrees with an estimate near 1.65 million.
Teaching notes
Make the practice count
- Use commas as reading aids while keeping every digit in its place-value column.
- Read the final sum aloud to catch omitted zero places.
Make it yours
Customize the practice
Choose your options, update the preview, then download the exact same pages.
Enlarged pages scroll. PDF size stays the same.
A useful next step
Related activities
Addition
Large horizontal addition
Add signed three- or four-digit values in horizontal form using place-value, compensation, or a vertical rewrite.
Preview and download