Mixed operations
Multi digit addition and subtraction
Mix vertical addition and subtraction with two through six digits, including focused no-regrouping and borrowing-into-zero practice.
Preview and downloadMixed operations practice
Missing digit mixed operations
Complete uniquely solvable digit blanks in two- to four-digit vertical addition and subtraction equations.
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
Find digits that make every column and the complete equation correct. Check the fixed number widths and all printed digits.
Download the practice pages alone, or include a separate answer key or teacher model. Longer activities may use more than one page.
Customize this worksheetPaper sizes and printing help · More mixed operations activities
Choose the operations and the amount of support
Choose by the learner’s current skills. Mixing operations adds the task of recognizing a sign before choosing a method, even when the individual numbers are familiar.
The preview shows the first student page. Downloads contain the complete worksheet; the version with answers adds a separate key with matching problem positions. More spacious written-method practice may use several pages.
Learning objective
What this activity builds
Use column constraints and regrouping to infer missing digits.
Worked example
4□ + 25 = 68
The missing digit is 3.
In the ones column, 3 + 5 = 8. The tens column then confirms 4 + 2 = 6.
Teaching notes
Make the practice count
- Blanks can occur in operands or results. Use information from neighboring columns when a carry or borrow is involved.
- A blank is one digit; it cannot be a multi-digit number or introduce a leading zero.
- Check the full equation after filling all blanks instead of checking each blank in isolation.
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
Mixed operations
Equality equations
Find one missing number in equations with addition or subtraction on both sides. Select operation pairs and a band for the known numbers.
Preview and download
Mixed operations
Four operation vertical practice
Practice six problems per operation in one document, with independent digit widths, regrouping settings and long-division remainder options.
Preview and download