Why was it easy to answer these questions without a calculator?
They involve dividing or multiplying with multiples of 5.
They involve dividing or multiplying with multiples of 10.
They involve dividing or multiplying with multiples of 2.
1 answer
These questions were easy to answer without a calculator because dividing or multiplying with multiples of 5, 10, or 2 involves basic mental math skills that most people are familiar with. Multiplying or dividing by these numbers is often seen as easier because of their relationship to easy counting patterns in our number system.