Adding number 2 to other numbers quiz. In this quiz children are required to add two numbers. The number two will appear in every problem, for example there problems like 2 + 5 =? 2 + 6 = etc. The quiz is an interactive online test for reviewing math skills both and home and in the classroom and for use by teachers, parents and children. The advantage is that children while taking the test get instant feedback and can continue attempting until they get the right score. This activity is for kids in kindergarten, 1st, 2nd and 3rd grades.