Q: How many lakhs are there in 1 million?

1 Million = 1,000,000. 1 Lakh = 100,000.\nTherefore, 1 Million = 10 lakhs.

Q: 1 crore is equal to how many millions?

1 Crore = 1,00,00,000. 1 Million = 10,00,000.\nDividing 1,00,00,000 by 10,00,000 gives 10 million.

Q: How is the number 73 written in Roman numerals?

73 can be expanded as 50 + 10 + 10 + 3.\nIn Roman numerals, 50 = L, 10 = X, and 3 = III.\nSo, 73 = LXXIII.

Question 1

Which of the following is the greatest number among 9235, 9253, 9523, and 9325?

Accepted Answer

Comparing the thousands digit, all numbers have 9. Comparing the hundreds digit, 9523 has 5 which is the greatest. Therefore, 9523 is the greatest number.

Question 2

What is the smallest 4-digit number that can be formed using the digits 4, 0, 3, and 7 without repeating any digit?

Accepted Answer

To form the smallest 4-digit number, we place the smallest non-zero digit (3) at the thousands place, followed by 0, then 4, and then 7. Thus, the number is 3047.

Question 3

How many lakhs are there in 1 million?

Accepted Answer

1 Million = 1,000,000. 1 Lakh = 100,000.
Therefore, 1 Million = 10 lakhs.

Question 4

1 crore is equal to how many millions?

Accepted Answer

1 Crore = 1,00,00,000. 1 Million = 10,00,000.
Dividing 1,00,00,000 by 10,00,000 gives 10 million.

Question 5

How is the number 73 written in Roman numerals?

Accepted Answer

73 can be expanded as 50 + 10 + 10 + 3.
In Roman numerals, 50 = L, 10 = X, and 3 = III.
So, 73 = LXXIII.

Knowing Our Numbers — CBSE Class 6 Mathematics Important Questions & Revision Notes