Positive numbers play a significant role in developing computation of integers in Mathematics. It is important for students to learn and understand mental calculation in the real life. Through the unit of study, students be able to apply an understanding of commutativity, associativity, distributive law to aid mental computation and be able to compares, orders and calculates with positive integers computation. As well as, they are able to use appropriate terminology to explain mathematical relationships. They also enable to apply the order of operations to mentally evaluate expressions involving positive integers and numerator or denominator of a positive fraction.

The study of computation of positive integers provides opportunities for students to appreciate the mental calculation and to apply computation integers understanding efficiently. The study enables students to develop skills as learners of mathematics, obtain enjoyment from mathematics, and become self-motivated learners through inquiry and active participation in challenging and engaging experiences.