Knowing Our Numbers quiz

The greatest 4-digit number is:

One lakh is equal to:

One million is equal to:

The place value of 5 in 2,57,814 is:

1 km is equal to:

5678 rounded to the nearest hundred is:

The Roman numeral for 40 is:

Which Roman symbol is never repeated?

The smallest 5-digit number using the digits 4, 0, 7, 2, 9 once each is:

1 crore is equal to:

Write the number name of 4,06,32,918 in the Indian system. (2 marks)

Write 7,34,52,601 in the International system with commas. (2 marks)

Arrange in descending order: 5000, 7500, 85400, 7861. (2 marks)

Write the expanded form of 3,04,506. (2 marks)

How many centimetres make 1 km? Show the working. (2 marks)

Estimate 578 + 161 by rounding to the nearest hundred. (2 marks)

Write the successor and predecessor of 1,00,000. (2 marks)

Simplify using brackets: 6 x (52 + 48) and 25 x 4 x 37. (2 marks)

Write in Roman numerals: 69 and 98. (2 marks)

How many 5-digit numbers are there in all? Explain. (2 marks)

A bus started its journey and reached different places with a speed of 60 km per hour. The journey covered 2457 km on the first day, 3500 km on the second day and 2100 km on the third day. Find the total distance travelled in the three days. (3 marks)

In an election, the successful candidate registered 5,77,500 votes and his nearest rival secured 3,48,700 votes. By what margin did the successful candidate win? (3 marks)

A machine manufactures 2,825 screws a day. How many screws did it produce in the month of January (31 days)? (3 marks)

One tablet contains 350 mg of medicine. How many grams of medicine are needed to make 2,00,000 tablets? (3 marks)

Estimate the product 578 x 161 by rounding each number to its greatest place, and find the exact product. (3 marks)

Read the passage and answer the questions. Kirti Bookstore sold books worth Rs 2,85,891 in the first week of June and books worth Rs 4,00,768 in the second week of June. (i) How much was the sale for the two weeks together? (ii) In which week was the sale greater and by how much? (iii) Round the total sale to the nearest thousand. (5 marks)

Read the passage and answer the questions. A milk dairy collects 1,25,500 mL of milk from village A, 98,750 mL from village B and 75,750 mL from village C every morning. (i) Find the total milk collected in millilitres. (ii) Convert this quantity into litres. (iii) If the milk is packed in 1 L pouches, how many pouches are needed? (5 marks)

Read the passage and answer the questions. The population of a city was 1,23,45,678 in a census. A newspaper reported it as "about 1.23 crore" while an international magazine wrote it as 12,345,678. (i) Write the number name in the Indian system. (ii) Write the number name in the International system. (iii) Round the population to the nearest lakh. (5 marks)

Read the passage and answer the questions. A clock tower has Roman numerals on its face. A visitor noticed that the number 4 was written as IIII instead of IV on the clock, while a book in the library had chapter numbers written as XIV, XIX and XXIV. (i) What is the standard Roman numeral for 4? (ii) Write the chapter numbers XIV, XIX and XXIV in Hindu-Arabic numerals. (iii) Write the next chapter after XXIV in Roman numerals. (5 marks)

Read the passage and answer the questions. A school plans a picnic for 1,248 students. Each bus can carry 52 students and costs Rs 4,500 for the day. (i) How many buses are needed? (ii) Find the total cost of the buses. (iii) Estimate the total cost by rounding Rs 4,500 to the nearest thousand and the number of buses to the nearest ten. (5 marks)

Draw place value charts in both the Indian and International systems and enter 58,423,202 in the International chart and 5,84,23,202 in the Indian chart. Write the number names in both systems and explain how 1 million relates to lakhs and 10 million to crores. (6 marks)

Draw a table showing the relation between units of length (km, m, cm, mm), mass (kg, g, mg) and capacity (L, mL). Use it to convert: (i) 5 km to cm (ii) 3 kg to mg (iii) 2500 mL to L (iv) 4,50,000 mg to kg. (6 marks)

Explain how to round a number to the nearest ten, hundred and thousand, using a number line for the number 3,467. Then estimate (i) 7,090 + 19,265 (ii) 5,673 - 436 to the nearest hundred and compare with exact answers. (6 marks)

Write the rules for forming Roman numerals. Using these rules, write 14, 39, 46, 99, 444 and 1024 in Roman numerals, and explain why IL is not a valid way to write 49. (6 marks)

Using the digits 6, 2, 7, 4, 3 once each, form the greatest and smallest 5-digit numbers. Then using the digit 0 and these digits, form the greatest and smallest 6-digit numbers. Write each number in the Indian system with commas and find the sum of the greatest and smallest 6-digit numbers. (6 marks)