Using the 5‑5‑5 smart chart, find the sum of 27 and 38.
Answer
65
The correct answer is 65 — Therefore, 27 + 38 = 65.
Step-by-step solution
- Identify the 5‑5‑5 chart, which helps add numbers ending in 5.
- Add 27 and 38 by adding 25 from the chart to 27, then add 38: 27+25=52.
- Now add the remaining 13: 52+13=65.
- Therefore, 27 + 38 = 65.
Common mistake: Forgetting to account for the 5 in the chart
Concept tested: Smart chart addition
Published · How this solution was prepared and checked
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