This worksheet is designed to help students practice the order of operations. Many students that I see in my 9th grade Algebra 1 class come to me with limited (or mistaken) knowledge of Order of Operations. By far the biggest misconception is that they think multiplication is always before division, and addition is always before subtraction (as they take PEMDAS literally). I always have to teach that multiply/divide is the same family and you have to go left to right. Problem #1 on this worksheet enforces what PE(M/D)(A/S) should be.
Other common mistakes are with exponents, or with adding before multiplying on an equation such as 2 + 3(4+5).
This worksheet is good practice for Pre-Algebra or Algebra 1 students. The answers are all positive. After having students do this worksheet, we then move into order of operations with negative numbers and answers.
Questions 26-30 are intended to have students think differently about the Order of Operations and to raise the difficulty level a little.
I have included an answer key for this worksheet.