Chapter 6: The Dairy Farm

A dairy farm is a busy place. Every morning, hundreds of litres of milk are collected. Trucks carry milk in cans. Workers count, weigh, and bill. Behind every glass of milk there are big numbers , number of cows, litres of milk, kilograms of feed, rupees of sale.

In this chapter we use a dairy farm to learn about large numbers , numbers in lakhs , and how to multiply, divide, and handle money with them. By the end you will read 1,00,000 (one lakh) as easily as you read 100.

What's inside

• Reading and writing numbers up to 1,00,000 and beyond.
• Multiplication and division of large numbers.
• Money: bills, profit, and rates.
• Word problems set in a dairy farm.

How to read this chapter

Start with place value of big numbers, then move on to operations, and finish with money problems. Always write the working step-by-step. The hands-on tasks use a kitchen and a market list, so keep them in mind.