Lesson eLearning

Using the 25‑25‑25 chart, calculate 6 × 25.

medium 3 marks Class 3 · Mathematics · Smart Charts
Answer
150

The correct answer is 150 — Verify by conventional multiplication: 6×25 = 150.

Step-by-step solution

  1. Use the 25‑25‑25 chart to multiply: 6 × 25 = 6 × (20 + 5) = 6×20 + 6×5.
  2. Calculate 6×20 = 120 using the chart (2×6=12, add 0).
  3. Calculate 6×5 = 30 using the chart.
  4. Add the two partial products: 120 + 30 = 150.
  5. Verify by conventional multiplication: 6×25 = 150.
Common mistake: Adding the partial products incorrectly

Concept tested: Smart Chart multiplication

Published · How this solution was prepared and checked

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