Converting ratios is a simple calculation that you can complete with a calculator. Solve easy ratios by reducing the numbers through a common factor to one that is simple enough to not require a calculator.
Simplifying a ratio may involve working with multiple ratios. If you are adding the ratios, ensure that the denominators are the same. For example, if you are given 2/3 and 1/2, the least common denominator is six. Divide this number by the denominator in the fraction, and multiply that result by the numerator. If you are asked to multiply two ratios, use cross-multiplication. To do this, multiply the numerator of one ratio by the denominator of the other. Do this for both numbers.
Simplify a single ratio by ensuring that it is in the lowest common form. For example, 4/16 can be reduced because 16 is a multiple of 4. Dividing both terms by 4 produces a new ratio of 1/4. This reduction typically involves a whole number without decimal spaces. Therefore, you cannot reduce a ratio like 2/7 any further.
Calculate the result to finish the conversion. For simple ratios, such as 1/4, you may know the answer offhand and won't need a calculator. For more difficult ratios, you may need a calculator to ensure accuracy.
Students can write out a fractional part, such as 44/100 as forty-four hundredths, which is the word form for this fraction. Another way to express this fraction is in decimal form or 0.44. To convert fractions that have 100 in the denominator, a student can multiple the numerator by 0.01.
Full Answer >The multiplication of percentages is accomplished by converting the percentage to decimals, and multiplying the decimals. To convert a percentage to a decimal, the percent sign must be removed, and the number divided by 100. The decimal point should always be moved two places to the left when dividing by 100. After dividing 75 by 100, the answer is 0.75.
Full Answer >To figure out a percentage, a person simply divides the two numbers in question then multiplies the answer by 100. In most cases, a small number is divided by a large number. Depending on the circumstance, however, the process may be reversed.
Full Answer >The easiest way to calculate a percentage is taking 10 percent of any number and multiplying it to find the percentage desired. To calculate 10 percent of a number, simply move the decimal point one place to the left.
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