Evaluate each expression. See Example.659 + 235 – 62EXAMPLEEvaluate: 27 − 16 + 5Strategy W...

Evaluate each expression. See Example.

659 + 235 – 62

EXAMPLE

Evaluate: 27 − 16 + 5

Strategy We will perform the subtraction first and add 5 to that result.

WHY The operations of addition and subtraction must be performed as they occur from left to right.

Solution

We will write the steps of the solution in horizontal form.

Caution! When making the calculation in Example 10, we must perform the subtraction first. If the addition is done first, we get the incorrect answer 6.