Self check Test available..
1. The difference between the place value and face value of 8 in 658742 is
Explain:- The given options are incorrect. Place value of 8 in 6,58,742 = 8,000 Face value of 8 = 8 Difference between them = 8,000 − 8 = 7,992
2.The difference between the place values of 6 and 3 in 256839 is
Explain:- Place value of 6 in 2,56,839 = 6,000 The place value of 3 in 2,56,839 = 30 Difference between them = 6,000 − 30 = 5,970
3. The difference of the smallest three digit number and the largest two digit number is
Explain:- The option (B) is the correct answer. We know that The smallest three-digit number is 100 and the largest two-digit number is 99. So the difference between them= 100 − 99 = 1
4. The largest three digit number formed by the digits 8, 5, 9 is
Explain:- The option (B) is the correct answer. We know that the largest number is formed by writing the digits in descending order.
5. The smallest three digit number having three distinct digits is
Explain:- The option (c) is the correct answer. We know that the smallest three digit numbers are 0, 1 and 2 By arranging them in ascending order we get 012 which is a two digit number. Hence, 102 is the smallest three digit number.
6. The largest three digit number having distinct digits is
Explaination:- The option (A) is the correct answer. The largest three digit numbers are 7, 8 and 9. The largest number is obtained by arranging them in descending order.
7. The difference between the largest three digit number and the largest three digit number with distinct digits is
Explaination:- The option (c) is the correct answer. We know that Largest three digit number = 999 Largest three-digit number with distinct digits = 987 Difference between them = 999 − 987 = 12
8. The product of the place values of two threes in 53432 is
Explaination:- The option (B) is the correct answer. We know that 3 in the second place from right is at tens place. So the place value of 3 at tens place = 30 We know that 3 in the fourth place from right is at thousands place. So the place value of 3 at thousands place = 3,000 Product of the place values = 3,000 × 30 = 90,000
9. The smallest counting number is
Explaination:- The option (B) is the correct answer. We know that the smallest digit is zero and the smallest counting number is 1.
10. The total number of 4 digit numbers is
Explaination:- The option (B) is the correct answer. We know that the smallest four digit number = 1,000 Largest four digit number = 9,999. So the total number of four-digit numbers = [9,999 − 1,000 ] + 1 = 9,000
11. The number of 3 digit numbers formed by using digits 3, 5, 9, taking each digit exactly once, is
Explaination:- The option (D) is the correct answer. 359, 395, 539, 593, 935 and 953 are the numbers.
12. Total number of numbers which when rounded off to nearest ten give us 200 is
Explaination:-The option (B) is the correct answer. 195, 196, 197, 198, 199, 200, 201, 202, 203, 204 are the numbers that when rounded off to nearest ten give us 200.
13. The smallest number which when rounded off to the nearest hundred as 600, is
Explaination:-The option (A) is the correct answer. The number from 550 to 649 are rounded off to the nearest hundred as 600. Hence, the smallest number is 550.
14. The greatest number which when rounded off to the nearest thousand 7000, is
Explaination:-The option (c) is the correct answer. Numbers from 6500 to 7499 are rounded off to the nearest thousand as 7000. Hence, the greatest number is 7499.
15. The difference between the greatest and smallest numbers which when rounded off a number to the nearest tens as 540, is
Explaination:-The option (B) is the correct answer. We know that the greatest number that when rounded off to the nearest tens will become 540 = 544 Least number that when rounded off to the nearest tens will become 540 = 535 So, the difference between them = 544 − 535 = 9
16. The difference between the greatest and smallest numbers which when rounded off a number to the nearest hundred as 6700, is
Explaination:-The option (B) is the correct answer. We know that the greatest number which when rounded off to the nearest hundred will become 6,700 = 6749 Least number which when rounded off to the nearest hundred will become 6,700 = 6650 So, the difference between them = 6,749 − 6,650 = 99
17. The difference between the greatest and the smallest numbers which when rounded off to the nearest thousand as 9000, is
Explaination:-The option (c) is the correct answer. We know that the greatest number which when rounded off to the nearest thousand becomes 9,000 = 9499 Smallest number which when rounded off to the nearest thousand becomes 9,000 = 8500 So, the difference between them = 9,499 − 8,500 = 999
18. Which of the following numbers is equal to 1 billion?
Explaination:-The option (D) is the correct answer. 1 billion = 100 crore
19. In the international place value system, we write one million for
Explaination:- The option (B) is the correct answer. One million = 10 lakh
20. Which of the following is not meaningful?
Explaination:- The option (d) is the correct answer. In Roman numerals V is 5 and X is 10. 5 cannot be written before 10
21. Which of the following is not meaningful?
Explaination:- The option (c) is the correct answer. In Roman numerals V is 5 and X is 10. 5 cannot be written two times.