23
Explanation:[tex]\begin{gathered} 4)\text{ Given:} \\ 57.5\text{ }\div\text{ 2.5} \end{gathered}[/tex]
Each of the numbers have one decimal place. To make the division easy, we will remove the decimal points by muliplying both numerator and denominator by 10:
[tex]\begin{gathered} \frac{57.5}{2.5}\text{ = }\frac{57.5}{2.5}\text{ }\times\frac{10}{10} \\ \text{ }\frac{57.5}{2.5}\text{ = }\frac{575}{25} \\ \text{Note: since we aremutlipying the denominator and numerator by same number. it is the same as multiplying by 1} \\ \frac{575}{25}\text{ = }\frac{5(115)}{5(5)} \\ 5\text{ cancels out} \\ =\text{ }\frac{115}{5} \end{gathered}[/tex][tex]\begin{gathered} \frac{115}{5}\text{ = }\frac{5(23)}{5} \\ 5\text{ cancels out} \\ =\text{ 23} \end{gathered}[/tex]
