One Atta Time Flash Cards Distance Learning Create New Sheet Select a Worksheet > Version 1 Version 2 Version 3 Version 4 Version 5 Version 6 Version 7 Version 8 Version 9 Version 10 Grab 'em All Combining Amounts 5nf1 Add more than 2 fractions to find a total amount.Add fractions with the same denominator by combining the numerators.Add fractions with different denominators by rewriting them with a common denominator first.