Once a students has mastered the basic math skills (Addition, Subtraction, Multiplication and division), they need to develope the understanding of numbers. This is also some times descibed as number theory. Number-sense include the factors, prime-factors, facotrization, lcm, gcf etc. We have included following topics under the number-sense as given below:

One can understand the application of these concept and their use in practical life through the word problems.

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