The following addition puzzle will help to improve your mathematical and logical thinking skills.
Complete the sum by swapping the digits and change the cells to white. Sounds easy, but can get quite tricky especially at the higher levels. Test your skills with other players online.
Try the free Mathway calculator and
problem solver below to practice various math topics. Try the given examples, or type in your own
problem and check your answer with the step-by-step explanations.
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