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Stock Market Application – Jan 5–9, 2009
publish date: 2026/05/08 23:24:29.056729 UTC
volume_mute
For the week of January 5–9, 2009, the Dow Jones changes were:
| Mon | Tue | Wed | Thu | Fri |
|---|---|---|---|---|
| −74 | +61 | −227 | +27 | −129 |
Round each number to the nearest ten and estimate the net gain or loss for the week.
Correct Answer
Net loss of approximately 340 points
Explanation
Round: \(-74 \to -70\), \(61 \to 60\), \(-227 \to -230\), \(27 \to 30\), \(-129 \to -130\).
Positives: \(60 + 30 = 90\). Negatives: \(-70 + (-230) + (-130) = -430\). Net: \(90 + (-430) = -340\). Negative → net loss of approximately 340 points.
Reference
Mathematics for college students