Repeated subtraction is a teaching method used to explain the concept of division. It is also a method that can be used to perform division on paper or in one's head if a calculator is not available and the individual has not memorized the multiplication tables.
Know MoreThe basic concept of repeated subtraction is to repeatedly subtract the divisor from the dividend. For example, when dividing 20 by five using the repeated subtraction method, five is repeatedly subtracted from 20 until nothing is left. Five can be subtracted four times from 20, therefore 20 divided by five is equal to four.
Learn MoreWhen 0 is used as a placeholder, it allows people to write numbers in shorthand and tell them apart. For example, the number 509 is shorthand for "5 times 100, plus 0 times 10 plus 9 times 1." Since zero adds no value to the 10's place, it can be used as a placeholder there, creating the possibility of the shorter notation.
Full Answer >A radical is a square root. To divide a radical or square root, put both radicals in a square root sign and divide them normally.
Full Answer >The fundamental operations in mathematics are addition, subtraction, multiplication and division. There are corresponding symbols for each. The plus sign (+) is for addition. The minus sign (-) is for subtraction. The symbols “x”, “*” and “•” signify multiplication. The obelus (÷) and forward slash (/) are used for division.
Full Answer >A fraction is converted to a percentage by first expressing the fraction with a denominator of 100, then writing the numerator with a percent sign behind it. Some fractions can be easily converted if basic ratio equivalents are known.
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