PPT: The Cleanest Village | Mathematics Olympiad Class 4 PDF Download

 Page 1


The 
Cleanest 
Village
Page 2


The 
Cleanest 
Village
I n t r o d u c t i o n
Mawlynnong, a small village in Meghalaya, India, is 
known as Asia's Cleanest Village.
Daisy and Lou, two students, prepare for a school 
trip to Mawlynnong.
They practice math by shopping and calculating 
costs for the trip.
Page 3


The 
Cleanest 
Village
I n t r o d u c t i o n
Mawlynnong, a small village in Meghalaya, India, is 
known as Asia's Cleanest Village.
Daisy and Lou, two students, prepare for a school 
trip to Mawlynnong.
They practice math by shopping and calculating 
costs for the trip.
Preparing for the Trip
Daisy and Lou are excited for their trip to Mawlynnong.
They need to buy items like:
Fruits and vegetables.
Biscuits.
Water bottles.
Dry fruits.
They join their mother for weekly shopping to get these supplies.
Page 4


The 
Cleanest 
Village
I n t r o d u c t i o n
Mawlynnong, a small village in Meghalaya, India, is 
known as Asia's Cleanest Village.
Daisy and Lou, two students, prepare for a school 
trip to Mawlynnong.
They practice math by shopping and calculating 
costs for the trip.
Preparing for the Trip
Daisy and Lou are excited for their trip to Mawlynnong.
They need to buy items like:
Fruits and vegetables.
Biscuits.
Water bottles.
Dry fruits.
They join their mother for weekly shopping to get these supplies.
Shopping for Supplies - At the Vegetable Cart
Item Price per kg (¹)
Custard apple 45
Beans 95
Radish 23
Onion 32
Potato 37
Yam 45
Sapota 70
Papaya 65
Banana 55
Sapan Dada sells fruits and vegetables at his cart. Daisy and Lou calculate costs for different quantities.
Page 5


The 
Cleanest 
Village
I n t r o d u c t i o n
Mawlynnong, a small village in Meghalaya, India, is 
known as Asia's Cleanest Village.
Daisy and Lou, two students, prepare for a school 
trip to Mawlynnong.
They practice math by shopping and calculating 
costs for the trip.
Preparing for the Trip
Daisy and Lou are excited for their trip to Mawlynnong.
They need to buy items like:
Fruits and vegetables.
Biscuits.
Water bottles.
Dry fruits.
They join their mother for weekly shopping to get these supplies.
Shopping for Supplies - At the Vegetable Cart
Item Price per kg (¹)
Custard apple 45
Beans 95
Radish 23
Onion 32
Potato 37
Yam 45
Sapota 70
Papaya 65
Banana 55
Sapan Dada sells fruits and vegetables at his cart. Daisy and Lou calculate costs for different quantities.
Shopping for Supplies - 
Vegetable Cart 
Calculations
Help Daisy and Lou find costs:
2 kg beans: ¹95 × 2 = ¹190
1 kg custard apple + 1 kg sapota: ¹45 + ¹70 = ¹115
1 kg onion + 1 kg potato: ¹32 + ¹37 = ¹69
1 kg radish + 1 kg yam: ¹23 + ¹45 = ¹68
2 kg radish + 2 kg papaya: (¹23 × 2) + (¹65 × 2) = ¹46 + 
¹130 = ¹176
2 kg onion + 2 kg potato: (¹32 × 2) + (¹37 × 2) = ¹64 + 
¹74 = ¹138