Lesson eLearning

Using the 5‑5‑5 smart chart, find the sum of 36, 29, and 18.

easy 2 marks Class 3 · Mathematics · Smart Charts
Answer
83

The correct answer is 83 — Check the sum: 36 + 29 + 18 = 83.

Step-by-step solution

  1. Use the 5‑5‑5 chart to add the ones column: 6 + 9 + 8 = 23 → write 3 and carry 2 to tens.
  2. Add the tens column: 3 + 2 + 1 + carried 2 = 8.
  3. Combine the results: 8 (tens) and 3 (ones) gives 83.
  4. Check the sum: 36 + 29 + 18 = 83.
Common mistake: Adding numbers without carrying over correctly

Concept tested: Smart Chart addition

Published · How this solution was prepared and checked

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