A new study has found that healthy 12-year-olds who score well in addition and multiplication ... out different arithmetic operations, e.g., adding, subtracting, multiplying and dividing.

From left to right, start with division and multiplication and continue with addition and subtraction. Don't forget, if a calculation has division and multiplication in it, do them left to right.

Since multiplication and division come before addition and subtraction in the order of operations, subtracting expenses would need to be inside the brackets. Bobby: Does that play a part in other ...