In fraction form, 2.5 is 5/2. First the decimal portion (0.5) must be calculated. The value of the decimal (5) is put over the place value (10ths) of the decimal (5/10), which is reduced to equal 1/2. Next, the whole number (2) is multiplied by the denominator (2 * 2 = 4), and this number is added to the numerator (4 + 1 = 5) to determine the final answer, 5/2.
Continue ReadingWhen putting a number into a fraction, it can be helpful to think of it in terms of pies. In the following example, Sally has been tasked with splitting 2.5 available pies up equally among a group of five people. A single serving is one-half of a pie. From working with the decimal portion of the fraction, Sally determined half of a pie (1/2) was available in addition to the two whole pies. Next, Sally must determine how many servings are available from the two whole pies to ensure there���s enough for everyone. Sally multiplied the whole numbers by the denominator (bottom half of the fraction) to determine how many half-pie pieces are available in both of those whole pies, and then added it to the numerator (top half of the fraction) to calculate how many half-pie pieces there are altogether. Sally calculated that two whole pies have four half-pie pieces in total. Adding in the last pie piece, Sally found the total number of half-pie pieces to be five (5/2), which is enough for everyone.
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