Question

write three math problems using the four operations where order matters and three where order doesn't matter.

Answer 1

in the first case:

`\begin{gathered} a)7(9+(4)/(5))\longleftarrow\text{ in this case is better to compute the parenthesis first.} \\ b)6+8+(2(4)/(7))(9)\longleftarrow in\text{ this case, we must convert the mixed fraction first } \\ c)8((7)/(11)+0.1687)\longleftarrow\text{ in this case is better to convert fraction into decimals} \\ d)6(5^2+3^2)\longleftarrow inthiscase,wemustfind5^2and3^2 \end{gathered}`

In tha last case,

`\begin{gathered} i)\text{ 5+6+9 }\longleftarrow\text{ the order of the adittion doenst matter} \\ ii)\text{ (5}\cdot6)\cdot(7\cdot5)\longleftarrow\text{ the order of the product doenst matter} \\ ii)(5\cdot6)/(6\cdot7)\longleftarrow\text{ we can compute the product first or we can divide first} \end{gathered}`