Q.1.     India’s population has been steadily increasing from 439 million in 1961 to 1028 million in 2001. Find the total increase in population from 1961 to 2001. Write the increase in population in Indian System of Numeration, using commas suitably.

Q.2.     Radius of the Earth is 6400 km and that of Mars is 4300000 m. Whose radius is bigger and by how much?

Q.3.     In 2001, the population of Tripura and Meghalaya were 3,199,203 and 2,318,822, respectively. Write the populations of these two states in words.

Q.4.     In a city, polio drops were given to 2,12,583 children on Sunday in March 2008 and to 2,16,813 children in the next month. Find the difference of the number of children getting polio drops in the two months.

Q.5.     A person had Rs 1000000 with him. He purchased a colour T.V. for Rs 16580, a motor cycle for Rs 45890 and a flat for Rs 870000. How much money was left with him?

Q.6.     Out of 180000 tablets of Vitamin A, 18734 are distributed among the students in a district. Find the number of the remaining vitamin tablets.

Q.7.     Chinmay had Rs 610000. He gave Rs 87500 to Jyoti, Rs 126380 to Hari and Rs 350000 to John. How much money was left with him?

Q.8.     Find the difference between the largest number of seven digits and the smallest number of eight digits.

Q.9.     A mobile number consists of ten digits. The first four digits of the number are 9, 9, 8 and 7. The last three digits are 3, 5 and 5. The remaining digits are distinct and make the mobile number, the greatest possible number. What are these digits?

Q.10.     A mobile number consists of ten digits. First four digits are 9,9,7 and 9. Make the smallest mobile number by using only one digit twice from 8, 3, 5, 6, 0.

Q.11.     In a five-digit number, digit at ten’s place is 4, digit at unit’s place is one fourth of ten’s place digit, digit at hundred’s place is 0, digit at thousand’s place is 5 times of the digit at unit’s place and ten thousand’s place digit is double the digit at ten’s place. Write the number.

Q.12.     Find the sum of the greatest and the least six-digit numbers formed by the digits 2, 0, 4, 7, 6, 5 using each digit only once.

Q.13.     A factory has a container filled with 35874 litres of cold drink. In how many bottles of 200 ml capacity each can it be filled?

Q.14.     The population of a town is 450772. In a survey, it was reported that one out of every 14 persons is illiterate. In all how many illiterate persons are there in the town?

Q.15.     Find the LCM of 80, 96, 125, 160.

Q.16.     Make the greatest and the smallest 5-digit numbers using different digits in which 5 appears at ten’s place.

Q.17.     How many grams should be added to 2 kg 300 g to make it 5 kg 68 g?

Q.18.     A box contains 50 packets of biscuits each weighing 120 g. How many such boxes can be loaded in a van which cannot carry beyond 900 kg?

Q.19.     How many lakhs make five billion?

Q.20.     How many millions make 3 crores?

Q.21.     Estimate each of the following by rounding off each number to nearest hundreds:

Q.22.     Estimate each of the following by rounding off each number to nearest tens:

Q.23.     Estimate each of the following products by rounding off each number to nearest tens:

Q.24.     The population of a town was 78787 in the year 1991 and 95833 in the year 2001. Estimate the increase in population by rounding off each population to nearest hundreds.

Q.25.     Estimate the product 758 × 6784 using the general rule.

Q.26.     A garment factory produced 216315 shirts, 182736 trousers and 58704 jackets in a year. What is the total production of all the three items in that year?

Q.27.     Find the LCM of 160, 170 and 90.

Q.28.     A vessel has 13 litres 200 mL of fruit juice. In how many glasses each of capacity 60 mL can it be filled?

Q.29.     Determine the sum of the four numbers as given below:

Q.30.     A loading tempo can carry 482 boxes of biscuits weighing 15 kg each, whereas a van can carry 518 boxes each of the same weight. Find the total weight that can be carried by both the vehicles.