Q:
# What is mental math?

**Calculations that a person does in his head without the use of external aids is called mental math.** It is the most common form of calculation in daily life, as it can quickly perform simple calculations and estimations.

Mental math uses facts about numbers that have been committed to memory. Such facts may include multiplication tables and relationships between numbers. For example, a student solving 86 x 5 might find it quicker to calculate the solution to (86 ÷ 2) x 10 than to write out the algorithmic process. Mental math is practiced in various ways, including finding different ways to calculate a given number.

Learn more about Arithmetic-
Q:
## What is regrouping in math?

A: Regrouping is the borrowing of a value from one column of numbers to another to aid a mathematical operation. If one is subtracting, it’s necessary to regr... Full Answer >Filed Under: -
Q:
## What does "sum" mean in math?

A: In mathematics, adding numbers, items or amounts produces a sum. The word also refers to a group of arithmetic problems given as a classroom assignment. As... Full Answer >Filed Under: -
Q:
## What is contemporary math?

A: Contemporary math is a math course designed for college freshman that develops critical thinking skills through mathematics with an emphasis on practical a... Full Answer >Filed Under: -
Q:
## What does it mean to simplify in math?

A: Simplifying in math generally refers to fractions. To simplify a fraction, find the highest number that divides into both the numerator, or the top number,... Full Answer >Filed Under: