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Estimate – Four Values to Nearest Ten
publish date: 2026/05/08 23:24:28.338911 UTC
volume_mute
Round each number to the nearest ten and estimate the value of the expression:
\[-363 + (-781) + 594 + (-42)\]
Correct Answer
\(-590\)
Explanation
Round: \(-363 \to -360\), \(-781 \to -780\), \(594 \to 590\), \(-42 \to -40\).
Positives: \(590\). Negatives: \(-360 + (-780) + (-40) = -1{,}180\). Net: \(590 + (-1{,}180) = -590\).
Reference
Mathematics for college students