1:
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Sally and Billy solved the following equation:
10 - 3 x 2 +(7-4)
1) Which student did the steps in the correct order and got the correct answer?
2) Why is it important for everyone to use the same order of operations?
Sally
Billy
Step 1: Subraction 10 - 3-7
Step 2 Multiplication 7x2 14
Step 1: Parentheses (7-4) - 3
Step 2: Multiplication 3 x 2 - 6
Step 3: Subtraction 10 -6 = 4
Step 3: Addition 14+ 7 = 21
Step 4 Subtraction 21 - 4 = 17
Step 4: Addition 4+3 = 7
Final Answer: 17
Final Answer 7