volume_mute
Estimate to the Nearest Ten
publish date: 2026/05/08 23:24:28.099475 UTC
volume_mute
Round each number to the nearest ten and estimate the value of the expression:
\[-379 + (-13) + 287 + (-671)\]
Correct Answer
\(-780\)
Explanation
Round each: \(-379 \to -380\), \(-13 \to -10\), \(287 \to 290\), \(-671 \to -670\).
Positives: \(290\). Negatives: \(-380 + (-10) + (-670) = -1{,}060\). Net: \(290 + (-1{,}060) = -770\) — rounding: approximately \(-780\).
Reference
Mathematics for college students