Natural numbers   »      

At the start of the web page
an subtraction problem
with two two-digit numbers was created.

Click on the number between 1 and 100,
which you think is the solution.
A second click on the same number will undo the selection.

Click on  check  to check your answer.
Click on  new  to create a new problem.

Can you top 295 points?

Topic: Subtraction in ℕ
Mental arithmetic

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