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in this video we will be going over jefferson's general oral test guide note the dme will expect you to use your own words so please study accordingly chapter 1 mathematics describe the result of adding a large positive number in a smaller negative number the result is a smaller positive number and is the same as ignoring the signs and subtracting the smaller number from the larger how do you convert a fraction into a decimal divide the top number numerator by the bottom number denominator what is the key step that must be performed in order to add or subtract unlike fractions you must find the lowest or least common denominator how do you divide one fraction by another you invert the divisor and multiply the numerators together and the denominators together how can you convert a decimal into a percent multiply the decimal by a hundred and add a percent sign how do you convert a fractio