intro 40 8 Hank Buckingham is... intro 40 8 Solving Real World Problems reminder "12" is the lowest (or least) common multiple--often called the LCM. Which operations will you use to solve? Addition & Division Addition only Multiplication & Subtraction Subtraction & Division Multiplication & Subtraction comment 1 200 180 17 7 Can you do this subtraction mentally? reminder When there is no operator in between 4 and x, you can assume it is multiplication. attention rectangle If you forget about the decimal in your answer, it won't make any sense! attention 17 1 20 Checking enables you to know for certain if you did the problem right or wrong!