Discussion
What is value of 945.341-1042.792+875.435+31.025?
Answer: D
Work left to right, treating the subtraction as a negative term:
\[ 945.341 - 1042.792 = -97.451 \]
\[ -97.451 + 875.435 = 777.984 \]
\[ 777.984 + 31.025 = 809.009 \]
Grouping the positives first gives the same result: \( 945.341 + 875.435 + 31.025 = 1851.801 \) and \( 1851.801 - 1042.792 = 809.009 \).
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