Question 3 - Number system - Indian and American - Chapter 1 Class 7 - Large Numbers Around us (Ganita Prakash)

Transcript

Question 3 Compare and write ‘<’, ‘>’ or ‘=’: (a) 30 thousand ____ 3 lakhs Let’s write our numbers first 30 thousand = 30, 000 3 lakhs = 3,00,000 We need to compare 30,000 & 3,00,000 First, put numbers one below the other (without commas) 30000 300000 Since 30,000 has less digits are than 3,00,000 ∴ 30,000 is smaller than 3,00,000 Thus, (a) 30 thousand < 3 lakhs Question 3 Compare and write ‘<’, ‘>’ or ‘=’: (b) 500 lakhs ______ 5 million Let’s write our numbers first 500 lakhs = 500 × 1,00, 000 = 5,00,00,000 5 million = 5,000,000 We need to compare 5,00,00,000 & 50,00,000 First, put numbers one below the other (without commas) 50000000 5000000 Since 5,00,00,000 has more digits are than 5,000,000 ∴ 5,00,00,000 is larger than 5,000,000 Thus, 500 lakhs > 5 million Question 3 Compare and write ‘<’, ‘>’ or ‘=’: (c) 800 thousand ____ 8 million Let’s write our numbers first 800 thousand = 800 × 1,000 = 8,00,000 8 million = 8,000,000 We need to compare 8,00,000 & 8,000,000 First, put numbers one below the other (without commas) 800000 8000000 Since 8,00,000 has less digits are than 8,000,000 ∴ 8,00,000 is smaller than 8,000,000 Thus, 800 thousand < 8 million Question 3 Compare and write ‘<’, ‘>’ or ‘=’: (d) 640 crore ______ 60 billion Let’s write our numbers first 640 crores = 640 × 1,00,00,000 = 6,40,00,00,000 60 billion = 60 × 1,000,000,000 = 60,000,000,000 We need to compare 6,40,00,00,000 & 60,000,000,000 First, put numbers one below the other (without commas) 6400000000 60000000000 Since 6,40,00,00,000 has less digits are than 60,000,000,000 ∴ 6,40,00,00,000 is smaller than 60,000,000,000 Thus, 640 crore < 60 billion