PEMDAS - Parentheses Exponents Multiplication Division Addition Subtraction. The 9 20 becomes a 29 and the 3 5 becomes a 15. Students combine the order operations PEMDAS with adding subtracting multiplying and dividing fractions.
A way to remember the order of the operations is PEMDAS where in each letter stands for a mathematical operation.
Since -2 2 equals 4 we get. After you have done P and E just go from left to right doing any M or D as you find them. If your students struggle with these questions it probably has more to do with their ability to work with fractions than the questions themselves. Parentheses - They take precedence over all other operators.