Blogs @Jonah's Math Corner


All about algebra – variables introduced, unknowns solved, and more!

Estimate and guess on the numbers

Smart estimates on the calculation results. If calculation result is an integer, them the simplest guessing technique is using divisors and check the last digit (that is the units-place digit).

There are more involved estimate techniques of expressions. Specifically, radicals can be approximated by fractions, so expressions involved radicals can be approximated.