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Word Problems: Operations on Large Numbers | Mathematics for Class 5 PDF Download

Q1: The population of a country in 1990 was 906450600 and next year it is increased by 9889700. What was the population of that country in the year of 1991?
Ans: 
The population of a country in 1990 = 906450600
Increased population by next year =  +9889700
Total population of that country in 1991 = 916340300
Therefore, the population of that country in the year of 1991 is 916340300.

Q2: The sum of two numbers is 41482308. If one number is 3918695 then, find the other number.
Ans:

Word Problems: Operations on Large Numbers | Mathematics for Class 5
Therefore, the other number is 37563613.

Q3: The cost of a chair is $980.50. Find the cost of such 2035 chairs.
Ans:

Word Problems: Operations on Large Numbers | Mathematics for Class 5
Therefore, cost of 2035 chairs is $1995317.50.

Q4: The cost of a flat is $4218000. If there are 36 similar flats in a building, how much money will be collected by selling all the flats?
Ans:

Cost of one flat = $4218000
Number of similar flats = 36
Cost of 36 flats = $4218000 × 36
Hence, the money collected = $151848000

Q5: The cost of 534 train tickets was $457104. Find the cost of one ticket?
Ans:

Number of train tickets = 534
Cost of 534 train tickets = $457104
Cost of 1 train ticket = 457104 ÷ 534
Word Problems: Operations on Large Numbers | Mathematics for Class 5
Therefore, cost of one train ticket is $856.

Q6: Aaron bought two houses for $1668000 and $2454000. How much did he spend in all?
Ans:

Word Problems: Operations on Large Numbers | Mathematics for Class 5
Amount of money spent in all $4122000.

Q7: Mr. Jones deposited $278475 in a bank in his account. Later he withdrew $155755 from his account. How much money was left in the bank in his account?
Ans:

Word Problems: Operations on Large Numbers | Mathematics for Class 5
Therefore, Mr. Jones has $ 122720in his bank account.

Q8: A tyre factory produces 6348 tyres a day. How many tyres will the factory produce in 460 days?
Ans:

Number of tyres a tyre factory produces in one day =  6348
Number of day =  460
so
Word Problems: Operations on Large Numbers | Mathematics for Class 5
Total number of tyres produces in 460 days = 2920080
Therefore, the tyre factory will produce 2920080 tyres in 460 days.

Q9: 470988 books are to be arranged equally in shelves. If 378 books are arranged in each shelf, how many shelves will be needed?
Ans:

Total number of books = 470988
Number of books arranged in each shelf = 378
Number of shelves needed = 470988 ÷ 378
Word Problems: Operations on Large Numbers | Mathematics for Class 5
Therefore, 1246 shelves needed to arrange 470988 books equally.

Q10: 36 families went on trip which cost them $1216152. If each family share the cost equally, how much did each family pay?
Ans:

Total number of families = 36
Total cost paid by 36 families = $1216152
Cost paid by each family = $1216152 ÷ 36
Hence, cost paid by each family = $33782

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FAQs on Word Problems: Operations on Large Numbers - Mathematics for Class 5

1. What are large numbers in mathematics?
Ans. Large numbers in mathematics refer to numbers that are very large in magnitude, usually consisting of several digits. These numbers are often difficult to work with and require special techniques and operations.
2. How do we perform operations on large numbers?
Ans. To perform operations on large numbers, such as addition, subtraction, multiplication, and division, we follow the same rules and procedures as with smaller numbers. However, it is important to keep track of the place values and carry over or borrow when necessary.
3. Why is it important to learn operations on large numbers?
Ans. Learning operations on large numbers is important as it helps in solving real-life problems that involve large quantities or measurements. It also develops critical thinking and problem-solving skills, which are essential in various fields such as science, engineering, and finance.
4. What are some strategies to simplify operations on large numbers?
Ans. There are several strategies to simplify operations on large numbers. These include breaking down the numbers into smaller parts, using estimation to get approximate answers, and applying properties of operations, such as the distributive property, to simplify calculations.
5. Can operations on large numbers be done using calculators or computers?
Ans. Yes, operations on large numbers can be done using calculators or computers that have the capability to handle large digits. These tools can provide accurate and quick results, especially for complex calculations. However, it is still important to understand the concepts and techniques involved in working with large numbers manually.
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