Math Problem Statement
Which expression is equivalent to 27, point, 3, plus, 74, point, 327.3+74.3?
Answer
Multiple Choice Answers
74, point, 3, minus, left parenthesis, minus, 27, point, 3, right parenthesis74.3−(−27.3)
27, point, 3, plus, left parenthesis, minus, 74, point, 3, right parenthesis27.3+(−74.3)
minus, 27, point, 3, minus, 74, point, 3−27.3−74.3
74, point, 3, minus, 27, point, 374.3−27.3
Solution
Let's simplify the given expression:
This is straightforward addition:
Now, let's evaluate the multiple choice options:
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: This changes the addition to subtraction of a negative, which is incorrect. Subtracting a negative becomes addition, but the expression already involves addition.
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: This changes the second number to negative, turning the expression into subtraction, which is incorrect. The original expression adds both numbers.
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: This changes both numbers to negative and subtracts them, which results in a large negative number. This is incorrect.
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: This subtracts 27.3 from 74.3. Although this is a correct operation, it does not match the original expression, which involves addition.
Conclusion:
None of the options match exactly, but if we were to choose the closest, option 4: is the closest because it correctly involves the numbers, even though it represents subtraction, which gives 47,
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Math Problem Analysis
Mathematical Concepts
Arithmetic
Addition
Negative Numbers
Formulas
Addition of real numbers: a + b
Theorems
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Suitable Grade Level
Grades 5-6