Lesson eLearning

Find the sum of 129 and 58.

hard 3 marks Class 2 · Mathematics · How Much Can You Carry
Answer
187

The correct answer is 187 — Combine hundreds, tens, and units: 1 8 7 → 187.

Step-by-step solution

  1. Add the unit digits: 9 + 8 = 17. Write 7 in the units place and carry 1 to the tens place.
  2. Add the tens digits plus the carry: 2 + 5 + 1 = 8. Write 8 in the tens place. No carry to hundreds.
  3. The hundreds digit comes from the original hundreds in 129, which is 1.
  4. Combine hundreds, tens, and units: 1 8 7 → 187.
Common mistake: Forgetting to carry the 1 from units to tens

Concept tested: Addition with carrying across two digits

Published · How this solution was prepared and checked

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