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Evaluate: 12.5 ├Ч 4 - 8 ├╖ 2
46
44
48
42
46
Perform multiplication and division simultaneously from left to right before carrying out subtraction to save exam time.
Expression to evaluate: 12.5├Ч4тИТ8├╖2
BODMAS:┬аBracketsтЖТOfтЖТDivisionтЖТMultiplicationтЖТAdditionтЖТSubtraction
Perform multiplication and division simultaneously from left to right before carrying out subtraction to save exam time.
Students often perform subtraction before division or multiplication, incorrectly computing 12.5├Ч4тИТ8 first as 50тИТ8=42 (Option D).
Identify the Expression
We need to evaluate the arithmetic expression using the standard order of operations (BODMAS rule).
12.5├Ч4тИТ8├╖2
Perform Division and Multiplication
According to BODMAS, division and multiplication take precedence over subtraction. First, compute the multiplication 12.5├Ч4 and the division 8├╖2.
12.5├Ч4=50and8├╖2=4
Substitute and Subtract
Substitute the calculated values back into the expression and perform the final subtraction.
50тИТ4=46
A is correct because the evaluated result of the expression using the BODMAS rule is 46.
Order of operations is foundational for simplifying complex algebraic expressions and solving equations in all quantitative aptitude sections.
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