Mathematical crossnumber puzzle for children with addition and subtraction operations. This puzzle is highly engaging and teaches children to calculate the right answer.

Features:

– There are two modes available for the puzzle: 3×3 and 4×4 elements.

– Both addition and subtraction operations.

– The puzzle may be printed as PDF in order to be solved on paper.

– You can easily reset the results or start a new one.

– You can check your answers by clicking the button “Check”. Correct answers will be green, while wrong answers are red.