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Evaluate the given expression. 13−12÷4×2
8
6
7
9
7
Always follow the BODMAS rule (Brackets, Orders, Division, Multiplication, Addition, Subtraction). Perform division and multiplication from left to right before subtraction.
Mathematical expression: 13−12÷4×2
BODMAS / PEMDAS Rule: Division and Multiplication from left to right, then Subtraction
Always follow the BODMAS rule (Brackets, Orders, Division, Multiplication, Addition, Subtraction). Perform division and multiplication from left to right before subtraction.
Students often perform subtraction first (13−12=1) or perform multiplication before division, which leads to incorrect answers.
Step 1: Identify the expression
The given expression is 13−12÷4×2. According to BODMAS, we must perform division and multiplication before subtraction.
13−12÷4×2
Step 2: Perform division
Evaluate the division part first: 12÷4=3. The expression becomes 13−3×2.
12÷4=3
Step 3: Perform multiplication
Next, evaluate the multiplication part: 3×2=6. The expression now simplifies to 13−6.
3×2=6
Step 4: Perform subtraction
Finally, subtract the numbers: 13−6=7.
13−6=7
C is correct because evaluating the expression 13−12÷4×2 using the BODMAS rule yields 7.
Mastering the order of operations (BODMAS/PEMDAS) is crucial for solving algebraic simplification and number system problems in competitive exams accurately.