This is the Addition Phase, Third step in English. It is after the child has learned the Addition in Arabic through simplified and picture supported ways to reach the normal form of exercise in a Horizontal or Vertical form.
Here you will notice the speed of the child in the solution.

sum of 5 or less	sum of 5 or less	sum of 10 or less
sum of 10 or less	sum of 10 or less	sum of 10 or less
sum of 10 or less	sum of 5 or less	sum of 5 or less
sum of 10 or less	sum of 10 or less	sum of 10 or less
sum of 10 or less	sum of 10 or less