Lesson eLearning

A balance scale is used to compare weights. On one side there is 5 kg of flour, and on the other side there is 3 kg of rice. How many kilograms of rice must be added to the rice side to balance the scale?

hard 3 marks Class 4 · Mathematics · How Heavy How Light
Answer
2 kg

The correct answer is 2 kg — Step 5: Hence, 2 kg of rice is required to balance the scale.

Step-by-step solution

  1. Step 1: Identify the weights on each side: flour = 5 kg, rice = 3 kg.
  2. Step 2: Find the difference between the two weights.
  3. Step 3: 5 kg – 3 kg = 2 kg.
  4. Step 4: Add 2 kg of rice to the rice side so both sides become 5 kg.
  5. Step 5: Hence, 2 kg of rice is required to balance the scale.
Common mistake: Adding rice to the heavier side instead of the lighter side

Concept tested: Balancing weights

Published · How this solution was prepared and checked

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