A student computes ^-8-2(^-3) by writing ^-10(^-3) = 30 How would you help this

Question

A student computes ^-8-2(^-3) by writing ^-10(^-3) = 30 How would you help this student? Select the correct answer below. A. The student does not fully understand the order of operations. The teacher should emphasize that in order to avoid ambiguity, mathematicians agree that multiplication is performed only before addition, and that division is performed only before subtraction. A few simpler examples like 10 + 2 - 3 and 10 - 6 - 2 should be helpful. B. The student does not understand that the expression is necessarily ambiguous. The student must determine, from the context, the appropriate order of operations in order to determine the correct answer. Using the same expression in different contexts should be helpful. C. The student does not fully understand the necessity of parentheses. The teacher should emphasize that in order to avoid ambiguity mathematicians agree that parentheses should always be placed so that ambiguity is eliminated. D. The student does not fully understand the order of operations. The teacher should emphasize that in order to avoid ambiguity, mathematicians agree that multiplication is performed before addition or subtraction. A simple example like 10 -2 - 3 should be helpful.

Explanation / Answer

Option c is the correct option as the student does not know the parenthesis meaning that as per the BODMAS rule parenthesis must be solved firstly.

Related Questions

Navigate

• Browse (All)
• Browse A
• Subjects

---

---

Integrity-first tutoring: explanations and feedback only — we do not complete graded work. Learn more.