Solved Questions on the International System of Numeration
1. What is the place value of the digit 5 in the number 9,542,763?
a) 500
b) 50,000
c) 500,000
d) 5,000,000
Answer: c) 500,000
Explanation: The digit 5 is in the hundred thousand places, which means its value is 5 x 100,000 = 500,000.
2. Which of the following is equivalent to 1 billion?
a) 10,000,000
b) 100,000,000
c) 1,000,000,000
d) 10,000,000,000
Answer: c) 1,000,000,000
Explanation: 1 billion is equal to 1,000,000,000 or 109.
3. How many zeroes are in the number 1 quintillion?
a) 15
b) 18
c) 21
d) 24
Answer: b) 18
Explanation: 1 quintillion has 18 zeroes, as it is equal to 10 to the power of 18.
4. What is the place value of the digit 6 in the number 73,986,452?
a) 6
b) 60
c) 600
d) 6,000
Answer: d) 6000
Explanation: In the International system of numeration, the value of a digit depends on its place value. The digit 6 is in the Thousands place, so its value is 6 multiplied by 1,000, which is 6,000.
5. Which number is equivalent to nine hundred twenty-five thousand six hundred four?
a) 925,604
b) 925,064
c) 925,604,000
d) 9,256,004
Answer: a) 925,604
Explanation: In the International system of numeration, nine hundred twenty-five thousand is written as 925,000.
Therefore, the number is 925,000 + 604 = 925,604.
Practice Questions on the International System of Numeration
1. Which of the following is not a place value in the International system of numeration?
a) Ones
b) Lakhs
c) Hundreds
d) Million
Answer: b) Lakhs
2. Write 648,340,021 in the International numeration system.
a) Six hundred forty-eight billion three hundred forty-hundred twenty-one
b) Six hundred forty-eight billion three hundred forty-thousand twenty-one
c) Six hundred forty-eight million three hundred forty-thousand twenty-one
d) One billion
Answer: c) Six hundred forty-eight million three hundred forty-thousand twenty one
3. Which number is equivalent to forty-five million six hundred seventy-eight thousand nine hundred ten?
a) 45,678,910
b) 4,36,78,910
c) 45,67,89,110
d) 4,56,78,91,000
Answer: a) 45,678,910
4. Which of the following is the correct way to write 250000 in the international system of numeration?
a) 250,000
b) 2,5000
c) 2,50,000
d) 25,0000
Answer: a) 250,000
5. What is the place value of the digit 8 in the number 6,723,958,437?
a) 8
b) 80
c) 800
d) 8,000
Answer: d) 8,000
6. What is the next number after 999,999,999?
a) 1,000,000,000
b) 1,000,000,001
c) 1,000,000,010
d) 1,000,000,100
Answer: a) 1,000,000,000
7. Which of the following is equivalent to 1 trillion?
a) 10,000,000,000
b) 100,000,000,000
c) 1,000,000,000,000
d) 10,000,000,000,000
Answer: c) 1,000,000,000,000
8. What is the place value of the digit 6 in the number 6,872,415?
a) 6 Ones
b) 6 Tens
c) 6 Hundreds
d) 6 Million
Answer: d) 6 Millions
9. Which of the following is the correct representation of the number 1.23 x 1099 in the international number system?
a) 1,230,000,000
b) 12,300,000
c) 123,000,000
d) 1,230,000
Answer: a) 1,230,000,000
10. Which of the following is the correct representation of the number 3427589 in the international number system?
a) 34,2758,9
b) 3,427,589
c) 3427,58,9
d) 34,275,89
Answer: b) 3,427,589
