SEARCH HOME
 Math Central Quandaries & Queries
 Question from christina, a parent: hi my question that's been bothering me is what's (3x6)+(12divided by2)-8= ?????

Hi Christina,

The parentheses tell you what to do first. In evaluating a mathematical expression we always perform the operations inside the parentheses first. You have

$(3 \times 6) + \left(\frac{12}{2}\right) - 8$

Inside the first set of parentheses is $3 \times 6$ so perform the multiplication to get $18.$ Inside the second set of parentheses is $\large \frac{12}{2}$ so perform the division to get $6.$ hence you expression becomes

$(3 \times 6) + \left(\frac{12}{2}\right) - 8 = 18 + 6 - 8.$

Finally $18 + 6 - 8 = 16.$

Penny

Math Central is supported by the University of Regina and The Pacific Institute for the Mathematical Sciences.