Natural numbers   »      
Add and subtract natural numbers
Special problems with brackets

 On this page you can practice calculating with natural numbers.

Hint:
First calculate the brackets, e.g.
15 + ((105 + 65)) - ((31 - 12))
    = 15 + 170 - 19
= 166     

Click on  check  to check your answer.
Click on  new  to create a new problem.
Can you top 295 points?


Add and subtract in ℕ
Tasks with brackets -3-

Calculate the brackets first ↦ result.
 =  =
        

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