add subtract multipy and division
1/2 X 2/4 and 3/4 divided by 1/2
to multiply the fractions you multiply the numerators and you multiply the denominators.and to divide you flip the second fraction and multiply the same.the relationship is you multiply in the division.
estimation of 9 3/4
to estimate if the fraction is or is more than 1/2 of the denominator you round and if it is less then half you round down