CBSE Class 5 Mathematics The Dairy Farm Worksheet Set 01

True or False

Question. In the King's reward, Minister 3 received the largest number of gold coins.
Answer: True
Explanation: Multiplying by 5 every day grew extremely fast, giving Minister 3 a huge total of 15,625 coins.

Question. Multiplying a number by zero always yields the number itself.
Answer: False
Explanation: Any number multiplied by 0 always equals 0.

Question. The product of two numbers remains the same even if their positions are reversed.
Answer: True
Explanation: Just like 2 × 3 = 6 and 3 × 2 = 6, changing the order does not change the answer.

Question. 67 × 68 is found by subtracting 67 from 67 × 67.
Answer: False
Explanation: 67 × 68 means 68 groups of 67, so you add one more 67 to 67 × 67, not subtract.

Question. Doubling one factor and halving the other factor keeps the product identical.
Answer: True
Explanation: When you make one number twice as big and cut the other in half, the total answer stays the same.

Fill in the Blanks

Question. Continue the sequence: 55 × 55 = ______
Answer: 3,025
Explanation: Numbers ending in 5 follow the rule: 5 × 6 = 30, followed by 25, giving 3,025.

Question. Using halving and doubling: 14 × 3 = 7 × ______
Answer: 6
Explanation: Half of 14 is 7, so double 3 to get 6 (7 × 6 = 42).

Question. If 99 × 100 = 9,900, without multiplication determine 99 × 99 = ______.
Answer: 9,801
Explanation: Subtract one group of 99: 9,900 – 99 = 9,801.

Question. Complete the pattern: 4 × 19 = 4 × 20 – ______
Answer: 4
Explanation: Since 19 is 1 less than 20, you subtract one group of 4 (4 × 1 = 4) from 80 to get 76.

Question. If 67 × 67 = 4,489, without multiplying find 67 × 68 = ______.
Answer: 4,556
Explanation: Add one more group of 67: 4,489 + 67 = 4,556.

Question. Find the product: 10 × 45 = ______
Answer: 450
Explanation: When you multiply any number by 10, simply place a zero at the end.

Question. Observe and finish the pattern: 1111 × 1111 = ______
Answer: 12,34,321
Explanation: Four 1s multiplied by four 1s count up to 4 and back down: 1234321.

Question. Fill in the missing multiplier: 50 × 28 = 100 × ______
Answer: 14
Explanation: 50 is doubled to 100, so 28 must be halved to 14.

Question. Find the total: 20 × 50 = ______
Answer: 1,000
Explanation: 2 × 5 = 10, and adding the two zeros gives 1,000.

Question. Solve the sequence: 1,234 × 9 + 4 = ______
Answer: 11,110
Explanation: Following the pattern of 9s and consecutive numbers, the answer gives five 1s followed by a 0.

Match the Following

Question. Approximate the products on the left and match them to the numbers given on the right.

Explanation: Round each number to the nearest 10, then multiply the rounded numbers to estimate the product.

Question. Fill in the table and notice the patterns.

Explanation: Multiply the non-zero digits first, then count and write the total number of zeros at the end.

Questions / Short Question Answers

Question. Anjali buys 15 bulbs and 12 tube lights from Sudha Electricals. Each bulb costs ₹ 25 and each tube light costs ₹ 34. How much cash should Anjali give to the shopkeeper?
Answer: ₹ 783
Explanation: Bulbs cost 15 × ₹ 25 = ₹ 375. Tube lights cost 12 × ₹ 34 = ₹ 408. Total cost = ₹ 375 + ₹ 408 = ₹ 783.

Question. A school has an auditorium with 35 rows, with 42 seats in each row. How many individuals can sit in this auditorium?
Answer: 1,470 people
Explanation: Multiply rows by seats: 35 × 42 = 1,470 seats.

Question. Mala went to a book exhibition and bought 18 books. The shop was selling 3 books for ₹ 150. After buying the books, she still had ₹ 20 left. How much cash did Mala have at the beginning?
Answer: ₹ 920
Explanation: 18 books is 6 sets of 3 books. Cost = 6 × ₹ 150 = ₹ 900. Adding the ₹ 20 left over gives ₹ 900 + ₹ 20 = ₹ 920.

Question. Maska Cow Farm has 297 cows. Each cow requires 18 kg of fodder per day. How much total feed is needed to feed 297 cows every day?
Answer: 5,346 kg
Explanation: Multiply the number of cows by the fodder per cow: 297 × 18 = 5,346 kg.

Question. Priya uses 16 metres of cloth to make 4 kurtas. How much material would she need to make 8 kurtas?
Answer: 32 metres
Explanation: 1 kurta takes 16 ÷ 4 = 4 metres. For 8 kurtas, she needs 8 × 4 = 32 metres.

Question. A merchant sold 28 bags of rice. Each bag costs ₹ 350. How much money did he earn by selling rice bags?
Answer: ₹ 9,800
Explanation: Multiply the number of bags by the price per bag: 28 × ₹ 350 = ₹ 9,800.

Question. Priya jogs 4 kilometres every day. How many kilometres will she run in 31 days?
Answer: 124 km
Explanation: Multiply daily distance by days: 4 km × 31 = 124 km.

Question. Place the digits 2, 5, and 3 suitably to get a product close to 100.
Answer: 53 × 2 = 106
Explanation: 53 × 2 = 106, which is only 6 away from 100, making it the closest possible product.

Question. In a test match, the Indian team hit twenty-four 4s and eighteen 6s across two innings. 234 runs were scored by running between the wickets and 23 runs were extras. How many total runs were made by the Indian team?
Answer: 461 runs
Explanation: Runs from 4s = 24 × 4 = 96. Runs from 6s = 18 × 6 = 108. Total runs = 96 + 108 + 234 + 23 = 461 runs.

Question. Gollappa has 29 cows on his farm. Each cow produces 5 litres of milk per day. How many litres of milk do the cows yield in total, each day?
Answer: 145 litres
Explanation: Multiply the number of cows by the milk each gives: 29 × 5 = 145 litres.

Question. Ananya is watching Republic Day celebrations on the city's public ground. There are 12 rows of students sitting ahead of her and 17 rows behind her. There are 18 students to her right and 22 students to her left. What is the total number of students on the ground?
Answer: 1,230 students
Explanation: Total rows = 12 + 17 + 1 (Ananya's row) = 30 rows. Students per row = 18 + 22 + 1 (Ananya) = 41 students. Total students = 30 × 41 = 1,230 students.

Question. A school library has 85 shelves and each shelf holds 162 books. Find the number of books in the library.
Answer: 13,770 books
Explanation: Multiply the number of shelves by books per shelf: 85 × 162 = 13,770 books.

Question. Three ministers were given choices for gold coins over 7 days. Guess who obtained the most gold coins?
Answer: Minister 3 received the most (15,625 coins).
Explanation: Minister 1 received 320 coins, Minister 2 received 2,187 coins, but Minister 3's coins multiplied by 5 each day to reach 15,625 coins.

Question. A village sports club organizes a women's football tournament. They sold 57 tickets for ₹ 115 each and collected fees from 3 teams at ₹ 1,599 each. What was the total money collected by the club?
Answer: ₹ 11,352
Explanation: Ticket sales = 57 × ₹ 115 = ₹ 6,555. Team fees = 3 × ₹ 1,599 = ₹ 4,797. Total money collected = ₹ 6,555 + ₹ 4,797 = ₹ 11,352.

Question. Which number am I? I am a two-digit number. I am greater than 8, a multiple of 9, less than 50, not a multiple of 4 or 11, and my ones digit is even.
Answer: 18
Explanation: Multiples of 9 between 8 and 50 are 9, 18, 27, 36, 45. 18 is not a multiple of 4 or 11, and its ones digit (8) is even.