To convert a whole number to a percentage, divide the whole number by the total number of objects in the group. Multiply by 100, and round to the necessary number of decimal places.
Know MoreTurn the whole number into a fraction by putting it over the total number of objects. For example, if there are 25 balls and 20 of them are green, then the fraction would be 20/25.
Divide the whole number, which is the number on top, by the total number, or the number on the bottom to get a decimal. From the previous example, 20/25 would be 20 divided by 25, which is 0.8 as a decimal.
To change decimal to percentage, multiply the decimal by 100, or move the decimal point two places to the right. From step two, the decimal is 0.8, so multiply this number by 100. The percentage is 80 percent.
Round the percentage, depending on the number of decimal places required. For example, if the percentage is 20.345 and must be rounded to two decimal places, then the answer would be 20.35.
The atomic mass is not given as a whole number because it is a weighted average taken of all of an atom's isotopes found in nature relative to the mass of carbon-12. The measurement unit used for atomic mass is the unified atomic mass that has the symbol "u." This is a derived unit from the carbon-12 isotope, where 12 u is the atomic mass of carbon-12.
Full Answer >You can convert any centimeter measurement to millimeters by remembering that there are 10 millimeters in 1 centimeter. Anytime you need to convert from centimeters to millimeters, simply multiply the centimeter value by 10.
Full Answer >To add whole numbers and fractions, the whole number must also be turned into a fraction to combine the two. For example, if the problem to be solved with 3/4 + 7, the 7 would become a fraction by representing it as 7/1. Any whole number can be easily turned into a fraction because it is divisible by itself, and can be represented as x/1.
Full Answer >When rounding a whole number, it is important to identify first the digit being rounded with its place value, such as tens, or hundreds. Once the rounding digit is identified the rule is to look at the number that is to the right of the rounding digitto see if it is less than or greater than 5. If this number is 5 or greater, the rounding digit increases by 1and the digits to the right of it become zeros.
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