I need help to teach fractions to my 4th grader, arranging them smallest to largest, when all denominators are different. I thought of Least common factor, but he doesnt know how to find that yet, converting to decimals will take forever if there are 5-7 fractions to be compared. Example is:
3/12, 4/10, 2/17, 3/ 19, 3/5, 1/11
Please advice.