Chapter 8 of Class 5 Maths Mela, Weight and Capacity, teaches measuring weight in grams and kilograms, and capacity in millilitres and litres.
Key Concepts
Weight units: grams (g) and kilograms (kg); 1000 g = 1 kg.
Capacity units: millilitres (mL) and litres (L); 1000 mL = 1 L.
Unitary method: finding the value of one unit first (like the cost of 1 kg), then scaling it up or down to any quantity.
Quick Recap
- If 5 kg of rice costs Rs 150, then 1 kg costs Rs 30 (150 ÷ 5), and 3 kg costs Rs 90 (30 × 3).
- Reading a weighing scale correctly means checking what each small marking between the numbers represents.
Common Mistake to Avoid
Mixing up grams and kilograms when converting — always check whether you need to multiply by 1000 (kg to g) or divide by 1000 (g to kg).
Frequently Asked Questions
What is the unitary method used for?
Finding the cost, weight, or amount for a single unit first, then multiplying to find the value for any other quantity.
Why is it useful to practise with a real kitchen scale?
It connects the abstract units (g, kg, mL, L) to real objects, making conversions easier to remember.
Full walkthrough: Chapter 8 Solutions · Extra Questions.
