Lesson eLearning

A class of 25 students eat 300 g of vegetables each during lunch. How many kilograms of vegetables are needed for the whole class?

medium 3 marks Class 3 · EVS · The Story of Food
Answer
7.5 kg

The correct answer is 7.5 kg — Thus, 7.5 kilograms of vegetables are needed.

Step-by-step solution

  1. Find total mass in grams by multiplying number of students with grams per student.
  2. 25 students × 300 g = 7,500 g.
  3. Convert grams to kilograms by dividing by 1,000.
  4. 7,500 ÷ 1,000 = 7.5 kg.
  5. Thus, 7.5 kilograms of vegetables are needed.
Common mistake: Not converting grams to kilograms or miscalculating multiplication

Concept tested: Conversion from grams to kilograms

Published · How this solution was prepared and checked

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