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 regroup when the number at the top of a column is smaller than the one below it.
Know MoreWhen subtracting numbers with more than one digit, write down the larger number first, followed by the smaller number directly below it. For instance, write 15 below when subtracting it from 32. Since 2 is smaller than 5, by regrouping, two becomes 12 when a 10 is borrowed from three on the column to the left. Likewise, 3 loses 1 to become 2. Subtracting 5 from 12 above it on the right column and 1 from 2 on the left column gives 17 as the answer to 32 - 15.
Learn more about ArithmeticIn mathematics, an array is a set of numbers or objects placed in rows or columns. Arrays are often used to represent multiplication or division.
Full Answer >In mathematics the difference is the result of subtracting one number from another, and represents the operation of removing objects from a collection. Mathematicians use the term "difference," because it shows by how much the two numbers in the subtraction problem differ.
Full Answer >Vedic mathematics is the name given to an ancient system of Indian mathematics that's based on simple rules and principles. Its premise is that any mathematical problem, such as arithmetic, algebra, geometry or trigonometry, can be solved orally by using 16 Vedic sutras. These sutras are short, poetic phrases describing one-line formulas that allow for natural ways of solving mathematical problems.
Full Answer >"Digits" are the symbols or characters used to represent a number visually. A number like five contains one digit, whereas a number like 555 contains three digits. This is easily seen when they are written as numerals: 5 versus 555.
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