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Choose the challenge
Explore six arithmetic question types. Adjust the range, carrying, borrowing, times tables, and question count.
A little every day
Small sums.
Steady growth.
A calm place for everyday arithmetic. Set the right challenge, practice together, or take a fresh page to the kitchen table.
View in Microsoft Store →
Works offlineNo account neededPractice stays local
A PAGE OF POSSIBILITY
A little math,
every day.
Name: ____________ Date: __________
1.28 + 17 = ___
2.64 − 28 = ___
3.6 × 7 = ___
4.48 ÷ 6 = ___
5.35 + 26 = ___
6.82 − 39 = ___
Take your time. You’ve got this.
Inside your workspace
See the next small step.
Focused screen practice, pages for the kitchen table, and a clear view of recent progress. These screens use example learner records.
Make it their own
The right kind of challenge.
A gentler kind of practice.
One family workspace connects screen practice, paper worksheets, and the little lessons hidden in mistakes.
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Practice at their pace
Answer one question at a time with a keyboard or keypad. Pause anytime and resume with progress saved.
✓
Learn from mistakes
Revisit missed questions with fresh practice. Two correct answers in separate sessions mark a question mastered.
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Take it to paper
Preview A4 or US Letter worksheets, then save a PDF with a separate answer key. Large print offers extra room.
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Notice steady progress
Follow accuracy, skill confidence, and practice days. Stars celebrate completion and effort.
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Room for every learner
Keep separate profiles and histories for each child. Nine languages, local backups, and accessible preferences help make it yours.
Three small steps
A good habit starts here.
Create a child profile
Choose a name, school grade, and a comfortable daily practice goal.
Find the right challenge
Pick the exercises and amount of practice. Start on screen or generate a worksheet.
Come back and grow
Review mistakes, notice progress, and build a little confidence every day.
From the notebook
A practical answer to a specific question.
Worked examples and step-by-step guides for the moments when you want to make practice more focused.
Browse all math practice guides →How to Print Math Worksheets Without Regrouping, with an Answer Key
Create addition and subtraction worksheets without carrying or borrowing, add a separate answer key, and print a readable A4 or US Letter PDF.
Read the guide →Why Subtraction Borrowing Mistakes Keep Happening—and How to Review Them
Work through 64 minus 28, separate a one-off slip from a repeated borrowing mistake, and build a small review routine with a math mistake notebook.
Read the guide →How to Practice One Times Table at a Time Without a Timed Test
Set up a focused multiplication session, connect it to exact division, and use a short practice plan for the 6, 7, or 8 times table.
Read the guide →How to Track Math Progress for Two Children Without Mixing Their Results
Keep separate math practice profiles, interpret accuracy and skipped questions correctly, and use a weekly family check-in with local backups.
Read the guide →A few useful answers
Make yourself at home.
Does Sumday need an account?
No. Create local child profiles and start practicing.
Can we practice offline?
Yes. Practice, worksheets, progress, and backups work without an internet connection. Store and support links open external services when you choose them.
Where is our family’s data saved?
Profiles, answers, and histories stay on this device. Sumday does not upload them or provide cloud synchronization.
Can more than one child use it?
Yes. Each child has a separate practice history, mistake notebook, and daily goal.
Which question types are available?
Addition, subtraction, multiplication, division, same-denominator fractions, and written column arithmetic.
How does the mistake notebook work?
Missed and skipped questions enter the notebook. Correct answers in two separate sessions mark a question mastered.
Can I print worksheets?
Save an A4 or US Letter PDF and open it with your usual viewer to print. Answer keys are on separate pages.
Can I move or restore our data?
Export a local backup, keep it somewhere safe, and import it on another device. You can merge data or replace local records.
What do I need to run Sumday?
The Store edition is for supported Windows 10 and Windows 11 computers with the Microsoft Edge WebView2 runtime.
How can I get help?
Email support@iamdev.me with your question or suggestion.
A little practice. A lot of possibility.
Your next small step starts with Sumday.