Number Squares – printable number puzzles (PDF)
Four boxes, four results: which numbers fit? Number squares with multiplication or addition, each with exactly one answer. Free as a PDF with an answer sheet.
How it works & FAQHow the number squares work
Each square has four empty boxes. The result of each row is on its right, the result of each column below it. The task is to find the four numbers that give all four results.
Demti checks every puzzle before it goes on the sheet: there is always exactly one correct answer. Where the results alone would not be enough, one number is given as a help.
Who are the number squares for?
In memory training they combine mental arithmetic with logical trial and error. Since every square is a small, complete task, there are lots of moments of success.
In elementary school they practise the times tables the other way round: which two numbers make 24?
Adjusting the difficulty
Adding is easier than multiplying. The range 1 to 5 keeps the results small; 2 to 9 leaves out the one and makes the puzzle trickier.
The filled-in example square shows how it works the first time.
Your worksheet in five steps
- Choose the operation: multiply or add.
- Choose the number range.
- If you like, set the number of squares and the example square.
- Click “Mix again” for new puzzles.
- Download the PDF, with the answer sheet if you like.
Frequently asked questions
Are the number squares free?
Yes. All worksheets on Demti are free and work without signing up. You may print and copy them at home, in groups and in the classroom.
Does every square really have only one answer?
Yes. Demti tries every possible number in the chosen range for each square and only keeps puzzles with exactly one answer.
Why is there sometimes a number in a box already?
With addition, several answers always fit the results. One given number makes the puzzle clear.
How do I check the answers?
Add the answer sheet. All squares are filled in there.