Question

Circle the benchmark that is closest to each sum or different and it’s number 3

Answer 1

`\begin{gathered} 1)\text{ } \\ (5)/(9)-(3)/(6)=((5)(6)-(9)(3))/((9)(6))=(30-27)/(54)=(3)/(54)\approx0 \\ \\ (5)/(9)-(3)/(6)\approx0 \\ \\ 2) \\ (1)/(2)+(5)/(6)=((1)(6)+(2)(5))/((2)(6))=(6+10)/(12)=(16)/(12)=(4)/(3)\approx1 \\ \\ (1)/(2)+(5)/(6)\approx1 \end{gathered}`