Missing Addition

This app is designed to improve your problem solving skill. You are not doing the problem in the traditional way such as "what is 4 plus 6?". Here we turn the it all the way around. For example: "? + 6 = 10" means "what number plus 6 equal 10?". This new approach will increase your flexibility when solving a problem with different given information.*** TEACHER & PARENT: This is absolutely a useful tool to test your students/ children to see how they are doing. Only 3 to 5 minutes per day, you will see the improvement within a week.
*** NOTE: Read the question carefully and choose the correct answer from the list. Press the Hint button for the difficult questions.