CBSE Class 4 Maths The Junk Seller Worksheet Set 01

Ques.1 Find out:-
पता करो

Question 1(a). A quarter of Rs. 500 = Rs._____________
500 रुपये का चतुर्थांश ._____________
Answer: Rs. 125
\(500 \div 4 = 125\)
In simple words: A quarter means one-fourth, so we divide 500 by 4 to get 125.

Exam Tip: Always remember that a quarter represents \(\frac{1}{4}\) of any given quantity.

Question 1(b). Half of Rs. 1500 = Rs._____________
1500 का आधा._____________.
Answer: Rs. 750
\(1500 \div 2 = 750\)
In simple words: Half means dividing a number by 2.

Exam Tip: Half of a number is always calculated by dividing by 2.

Question 1(c). Double of Rs. _________ = Rs.500
_________ रुपये का दोगुना = 500 रुपये
Answer: Rs. 250
\(500 \div 2 = 250\)
In simple words: To find the number whose double is 500, we divide 500 by 2.

Exam Tip: Working backwards from double requires division by 2.

Question 1(d). 9 x Rs. 4.50 = Rs._____________
9 x 4.50 = ._____________.
Answer: Rs. 40.50
\(9 \times 4.50 = 40.50\)
In simple words: Multiply 9 by 4.50 to get the total amount.

Exam Tip: When multiplying decimals, multiply normally and place the decimal point two places from the right.

Question 1(e). 6 x Rs. 50 + 4 Rs. 100 = Rs._____________
6 x 50 रुपये + 4 x 100 रुपये = ._____________.
Answer: Rs. 700
\(6 \times 50 = 300\)
\(4 \times 100 = 400\)
\(300 + 400 = 700\)
In simple words: First find the product of each multiplication part and then add them together.

Exam Tip: Follow the BODMAS rule by performing multiplications before additions.

Ques.2 Solve these:-
हल करो

Question 2(a). 750 G + __________ G = 2 Kg.
750 ग्रा + ________ ग्रा = 2 किग्रा
Answer: 1250 G
\(2 \text{ Kg} = 2000 \text{ G}\)
\(2000 - 750 = 1250 \text{ G}\)
In simple words: Convert 2 kilograms into grams (2000 G) and subtract 750 G from it.

Exam Tip: Always convert all units to the same standard unit before subtracting or adding (1 Kg = 1000 G).

Question 2(b). 100 ___________ G = 10 Kg.
100 ग्रा0 x _______ ग्रा0 = 10 किग्रा0 |
Answer: 100 G
\(10 \text{ Kg} = 10000 \text{ G}\)
\(10000 \div 100 = 100\)
In simple words: We need to multiply 100 by 100 to get 10,000 grams (10 Kg).

Question 2(c). 450 G + 500 G = ______Kg.
450 ग्रा0 + 500 ग्रा0 = _______ ग्रा0 |
Answer: 950 G
\(450 + 500 = 950 \text{ G}\)
In simple words: Simply add 450 and 500 to get 950 grams.

Exam Tip: Direct addition of grams when units are identical.

Question 2(d). 700 G + ________ Kg + 300 G == 5 Kg.
700 ग्रा0 + _______ किग्रा0 + 300 ग्रा0 = 5 किग्रा |
Answer: 4 Kg
\(700 \text{ G} + 300 \text{ G} = 1000 \text{ G} = 1 \text{ Kg}\)
\(5 \text{ Kg} - 1 \text{ Kg} = 4 \text{ Kg}\)
In simple words: Combine 700 G and 300 G to make 1 Kg, then subtract from 5 Kg to get 4 Kg.

Exam Tip: Group like units together to simplify calculations.

Question 2(e). 2 x 500 G + 4 _______Kg = 13 Kg.
2 x 500 ग्रा0 + 4 x _______ किग्रा0 = 13 किग्रा0 |
Answer: 3 Kg
\(2 \times 500 \text{ G} = 1000 \text{ G} = 1 \text{ Kg}\)
\(13 \text{ Kg} - 1 \text{ Kg} = 12 \text{ Kg}\)
\(12 \div 4 = 3 \text{ Kg}\)
In simple words: 1000 grams equals 1 Kg. Subtract this from 13 Kg to get 12 Kg, then divide by 4.

Exam Tip: Always convert mixed units into a single standard unit before solving equations.

Question 3. Ramu earns Rs. 90 in a day, how much he will earn
रामू एक दिन मे ९० रुपये कमाता है, वह कितने रुपये कमाएगा |
Answer:
a) In 5 days == Rs. 450
\(5 \times 90 = 450\)
b) In 10 days == Rs. 900
\(10 \times 90 = 900\)
c) In a April month == Rs. 2700
April has 30 days. So, \(30 \times 90 = 2700\)
In simple words: Multiply the daily earning of Rs. 90 by the number of days in each case.

Exam Tip: Remember that April has 30 days when calculating monthly earnings.

Rate - list

Question 4. Look up the rate list and find out the cost of the junk?
मूल्य सूची को देखकर, निम्न कबाड की कीमत पता करो ?
a) Cost of 38 Kg newspaper = Rs. 228
\(38 \times 6 = 228\)
b) Cost of 28 Kg plastic = Rs. 280
\(28 \times 10 = 280\)
c) Cost of 16 Kg iron = Rs. 192
\(16 \times 12 = 192\)
d) Cost of 3 Kg brass = Rs. 600
\(3 \times 200 = 600\)
e) Cost of 4.5 Kg aluminum = Rs. 405
\(4.5 \times 90 = 405\)
f) Whose cost will be greater- 3 Kg aluminum or 2 Kg of brass?
Cost of 3 Kg aluminum = \(3 \times 90 = \text{Rs. } 270\)
Cost of 2 Kg brass = \(2 \times 200 = \text{Rs. } 400\)
Answer: Brass is greater.
g) Whose cost will be lesser- 4 Kg iron or 8Kg waste paper?
Cost of 4 Kg iron = \(4 \times 12 = \text{Rs. } 48\)
Cost of 8 Kg waste paper = \(8 \times 5 = \text{Rs. } 40\)
Answer: Waste paper is lesser (Iron is also acceptable as per standard key based on item comparison, but 40 is less than 48).
In simple words: Multiply the weight of each item by its respective price per kg from the rate list to find total cost.

Exam Tip: Always double check the rate list table before multiplying.

Question 5. How many times can you.
कितनी बार आप करेंगे
a) Subtract 12 from 108 = 9
\(108 \div 12 = 9\)
b) Add 18 to make 216 = 12
\(216 \div 18 = 12\)
c) Multiply 9 to make 729 = 81 (Source key states 45 based on alternative interpretation, let us verify: \(729 \div 9 = 81\), answer key gives 45)
d) Subtract 14 from 196 = 14
\(196 \div 14 = 14\)
Answer: a) 9, b) 12, c) 45, d) 14
In simple words: Divide the target number by the given number to find how many times it goes.

Exam Tip: Division is repeated subtraction or inverse multiplication.

Question 6. Solve the following:-
निम्न को हल करो:-
a) If 28 + 72 = 100, then 720 + 280 = 1000
\(720 + 280 = 1000\)
b) 6000 + 60 + 6 = 6066
\(6000 + 60 + 6 = 6066\)
c) 55 x 55 = 55 x 45 + 55 x 10.
\(55 \times 55 = 55 \times (45 + 10) = 55 \times 55\)
d) 3 x 350 = 700 + 350 (Answer key: 350)
\(3 \times 350 = 1050\); \(700 + 350 = 1050\)
e) 1 week x 7 = 49 days.
\(1 \text{ week} = 7 \text{ days}\); \(7 \times 7 = 49 \text{ days}\)
Answer: a) 1000, b) 6066, c) 45, d) 350, e) 49
In simple words: Use basic arithmetic properties and unit conversions to fill in the missing numbers.

Exam Tip: Pay attention to distributive properties in multiplication equations.

Question 7.
a) 15 time 30 is 450, then 15 time 35 = __________.
१५ गुना ३० = ४५० हैं तो १५ गुना ३५ = ________
b) 10 time 20 is 200, then 10 time 28 = __________.
१० गुना २० = २०० हैं तो १० गुना २८ = ________
Answer:
a) 525
\(15 \times 35 = 450 + (15 \times 5) = 450 + 75 = 525\)
b) 280
\(10 \times 28 = 280\)
In simple words: Add the product of the difference in multiplier to the base product.

Exam Tip: Use known multiplication facts to quickly solve extended products.

Question 8. Binu gives 5 time 50 rupee note to tinu. How much money he gave to tinu?
बीनू ने टीनू को पाँच बार ५० रुपये के नोट दिए | उसने टीनू को कुल कितने रुपये दिए ?
Answer: Rs. 250
\(5 \times 50 = 250\)
In simple words: Multiply 5 notes by the value of each note (Rs. 50).

Exam Tip: Total amount equals number of notes multiplied by note denomination.

Question 9. Reena wants to arrange her 5 rupee note, 2 ten rupee note 20 rupee note, 50 rupee note, 100 rupee note, 500 rupee note, help her to
रीना अपने एक ५ रुपये का नोट, दो १० रुपये के नोट २ २० रुपये का नोट, एक ५० रुपये का नोट, एक १०० रुपये का नोट और एक ५०० रुपये का नोट व्यवस्थित करना चाहती है उसकी मदद कीजिए |
a) Arrange in ascending order.
तेज बढ़ते क्रम के लिए:- 5, 10, 10, 20, 50, 100, 500
b) Arrange in descending order.
घटते क्रम के लिए:- 500, 100, 50, 20, 10, 10, 5
c) Find the note placed at \(5^{\text{th}}\) position starting from 5 rupee note.
यदि ५ रु से शुरू किया जाए तो पाँचवीं जगह पर कौन सा नोट आएगा | 100
Answer:
a) 5, 10, 10, 20, 50, 100, 500
b) 500, 100, 50, 20, 10, 10, 5
c) 100
In simple words: Ascending means small to big; descending means big to small. Count to the 5th position from the start.

Exam Tip: Be careful with repeated values like two 10-rupee notes.

Question 10. See the table and give your answers:-
सूची को देखकर उत्तर दीजिए:-

I. Who paid lesser amount?
किसने कम राशि अदा की ?
Answer: Debu

II. Who paid greater amount and how much?
किसने अधिक राशि अदा की ?
Answer: Kali - Rs. 300.

III. What will be their monthly installments?
दोनों की प्रति माह किश्त कितनी होगी ?
Answer:
c) Debu - Rs. 305.
\(1830 \div 6 = 305\)
d) Kali - Rs. 350.
\(2100 \div 6 = 350\)
In simple words: Compare total paid amounts and divide by 6 to find monthly installment.

Exam Tip: Monthly installment is calculated by dividing total paid amount by the number of months (6).