Page 72
Observe the table and answer the following
-
1. How far did Neeraj Chopra throw the javelin in the 2021 Olympics?
8758 Centimeters.
-
2. How far did Neeraj Chopra throw the javelin in the 2018 Commonwealth games?
8647 Centimeters.
-
3. What is the difference between the distances Neeraj threw the javelin at the 2021 Olympics and the 2018 Commonwealth Games?
8758 - 8647 = 111 Centimeters.
Page 74
Do these
-
1. Subtract 2461 from 8975.
Th H T O
8 9 7 5 (Minuend)
- 2 4 6 1 (Subtrahend)
-------
6 5 1 4 (Difference) -
2. One study table costs ₹200 less than another. Which pair of prices is correct?
Answer: B) ₹4,920 and ₹4,720 (4920 - 4720 = 200)
-
3. Ramesh subtracts 1530 instead of 1532 from 4532 and gets 3000. How can he correct his answer without redoing the subtraction?
Answer: D) Subtract 2 (3000 - 2 = 2998)
Page 76 & 78
3.1 Subtraction by regrouping - Example
-
The Riverview Park is situated on the bank of Nagavali river in Srikakulam. On a Sunday 3264 persons visited the park. Out of these, 1896 were adults and the remaining were children. How many children visited the park on Sunday?
Number of persons who visited the park = 3264
Number of adults visited the park = (-) 1896
Number of children who visited the park = 1368
Page 80
Do these
-
1. a) 8457 - 5897
2560
-
1. b) 9040 - 3627
5413
-
1. c) 5000 - 2829
2171
-
2. Subtract 4385 from 9230.
9230 - 4385 = 4845
-
Example - 2: Balaraju made 8450 bricks in his brick yard. After selling some bricks, 4852 bricks were left in the yard. How many bricks were sold?
Number of bricks made = 8450
Number of bricks available now = (-) 4852
Number of bricks sold = 3598
Page 82
Example 3 & Do these
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Example 3: Rajani bought a saree for ₹9000 and Ramani bought another saree for ₹6895. How much money did Rajani pay more than Ramani?
Cost of saree purchased by Rajani = ₹9000
Cost of saree purchased by Ramani = (-) ₹6895
Money paid by Rajani more than Ramani = ₹2105 -
1. Sri krishna had ₹9213 in his bank account. He withdrawn ₹7435. How much money was left in his account?
Total amount in bank account = ₹9213
Amount withdrawn = (-) ₹7435
Money left in account = ₹1778 -
2. Nanaji wanted to buy a sprayer of cost ₹9500. Government provided a subsidy of ₹2500. Then how much money should he pay?
Cost of sprayer = ₹9500
Subsidy provided = (-) ₹2500
Money he should pay = ₹7000
Page 84
Do these: Subtraction by Estimation
-
1. In a Village, there are 8142 trees. Out of these 3780 trees fell down due to Hudhud cyclone. The number of trees remaining is.......... (approximately)
Answer: b) 4000 (8000 - 4000 = 4000)
-
2. The sum of two numbers is 7152. One of these number is 5200. The other number rounded to thousand is
7152 - 5200 = 1952. Rounded to thousand = 2000.
-
3. Write correct symbol of (<, >, or =) in boxes by estimating the difference.
a) 2300 - 800 [ ] 2950 - 1100
b) 4100 - 1800 [ ] 8005 - 6200
c) 3900 - 890 [ ] 7020 - 5630a) 2300 - 800 (1500) < 2950 - 1100 (1850)
b) 4100 - 1800 (2300) > 8005 - 6200 (1805)
c) 3900 - 890 (3010) > 7020 - 5630 (1390)
Try these: Correct the following subtractions
-
1. a) 5920 - 3486
Correct Subtraction: 5920 - 3486 = 2434
Page 86 & 88
Do these: Oral Subtraction & Fact Families
-
1. Subtract orally.
a) 95 - 21 = 74
b) 88 - 55 = 33
c) 66 - 33 = 33
d) 52 - 26 = 26
e) 73 - 37 = 36 -
2. Write subtraction facts from the given addition facts.
a) 734 + 268 = 1002Fact 1: 1002 - 268 = 734
Fact 2: 1002 - 734 = 268 -
b) 3140 + 2869 = 6009
Fact 1: 6009 - 2869 = 3140
Fact 2: 6009 - 3140 = 2869 -
3. Write addition facts from the given subtraction facts.
a) 480 - 320 = 160Fact 1: 160 + 320 = 480
Fact 2: 320 + 160 = 480 -
b) 5286 - 3812 = 1474
Fact 1: 1474 + 3812 = 5286
Fact 2: 3812 + 1474 = 5286
EXERCISE-1
1. Do the following.
- a) 5889 - 3643 = 2246
- b) 8926 - 2634 = 6292
- c) 9600 - 2780 = 6820
- d) 8000 - 3675 = 4325
Page 90
-
2. Subtract 7425 from 9015.
9015 - 7425 = 1590
-
3. Take away 3086 from 8415.
8415 - 3086 = 5329
-
4. How much is 3189 more than 2883?
3189 - 2883 = 306
-
5. Estimate the difference by rounding each number to the nearest thousand: 5742 - 4265 =
6000 - 4000 = 2000 (Exact = 1477)
-
6. Do a quick estimate to check which of the following is more than 4000.
a) 5555 - 1266 | b) 9885 - 7657a) 5555 - 1266 = 4289 (More than 4000)
b) 9885 - 7657 = 2228 (Less than 4000)
Answer: a) 5555 - 1266 is more than 4000. -
7. Fill with (<, > or =) symbols.
a) 5000 - 1200 [ ] 3600 - 2400
b) 9200 - 4020 [ ] 7680 - 2118a) 5000 - 1200 (3800) > 3600 - 2400 (1200)
b) 9200 - 4020 (5180) < 7680 - 2118 (5562) -
8. In a school, the children collected ₹8562 for CM Relief fund. The staff donated ₹2892 less than the amount donated by children. How much money did the staff collect?
Amount collected by children = ₹8562
Less amount donated by staff = (-) ₹2892
Money collected by staff = ₹5670 -
9. Diksha portal was viewed by 9125 people on its first day, by 6532 people on the second day. How many more people viewed the app on the first day than on the second day?
Views on first day = 9125
Views on second day = (-) 6532
More views on first day = 2593
Page 92
Project Work: Attendance Details Table
| Serial number | Day | Number of students in primary classes in the Mandal | Number of students present | Number of students absent |
|---|---|---|---|---|
| 1. | Monday | 1200 | 1150 | 50 |
| 2. | Tuesday | 1200 | 1165 | 35 |
| 3. | Wednesday | 1200 | 1140 | 60 |
| 4. | Thursday | 1200 | 1170 | 30 |
| 5. | Friday | 1200 | 1155 | 45 |
| 6. | Saturday | 1200 | 1120 | 80 |
Page 96
Do these: Cost Price and Selling Price
-
a) Seetha bought lemons for ₹600 and sold them for ₹850.
Cost Price (C.P.) = ₹600, Selling Price (S.P.) = ₹850
-
b) Lakshmi bought flowers for ₹1500 and sold them for ₹1350.
Cost Price (C.P.) = ₹1500, Selling Price (S.P.) = ₹1350
-
c) Veerayya sold bananas for ₹2450 and previously he bought for ₹1940.
Cost Price (C.P.) = ₹1940, Selling Price (S.P.) = ₹2450
-
d) Adilakshmi bought leafy vegetables for ₹150 and sold them for ₹120.
Cost Price (C.P.) = ₹150, Selling Price (S.P.) = ₹120
Complete the table:
| Context | Cost Price (C.P) | Selling Price (S.P) | Which is more? (C.P / S.P) | Which is less? (C.P / S.P) |
|---|---|---|---|---|
| Mohan bought one quintal of Dal for ₹5800 and sold it for ₹5580. | ₹5800 | ₹5580 | C.P | S.P |
| Gopal bought a bicycle for ₹8860 and sold it for ₹9210. | ₹8860 | ₹9210 | S.P | C.P |
| Gowri bought one quintal of millets for ₹3250 and sold it for ₹3780. | ₹3250 | ₹3780 | S.P | C.P |
| Akbar bought flowers for ₹980 and sold for ₹900. | ₹980 | ₹900 | C.P | S.P |
Page 98
Do these: Profit or Loss
-
1. Say whether profit or loss made in each of the following cases.
a) Cost Price = ₹3100, Selling Price = ₹2950Since S.P < C.P, it is a Loss (Loss = ₹3100 - ₹2950 = ₹150). -
b) Cost Price = ₹2505, Selling Price = ₹3160
Since S.P > C.P, it is a Profit (Profit = ₹3160 - ₹2505 = ₹655).
-
2. Padmaja bought a saree for ₹7500 and sold it to Rupa for ₹5850. Say whether Padmaja made profit or loss.
Cost Price = ₹7500, Selling Price = ₹5850
Since S.P < C.P, Padmaja made a Loss of ₹1650.
Page 100
EXERCISE-2
1. Write 'P' for Profit and 'L' for Loss in the given brackets.
- a) CP = ₹420, SP = ₹390 ( L )
- b) CP = ₹920, SP = ₹990 ( P )
- c) CP = ₹4860, SP = ₹5002 ( P )
- d) CP = ₹3140, SP = ₹2849 ( L )
- e) CP = ₹2195, SP = ₹3000 ( P )
Word Problems
-
2. A shop keeper bought a bag of sugar for ₹1650 and sold it for ₹90 more. Find whether he made profit or loss.
He made a Profit of ₹90 (Selling Price = ₹1650 + ₹90 = ₹1740).
-
3. Kumar bought oranges for ₹1520 and sold them for ₹150 less. Find whether he made profit or loss.
He made a Loss of ₹150 (Selling Price = ₹1520 - ₹150 = ₹1370).
-
4. Rahim bought umbrellas for ₹2100 and sold them for ₹1950. Find whether he made profit or loss.
Since S.P < C.P, Rahim made a Loss of ₹150 (₹2100 - ₹1950 = ₹150).
-
5. Salman bought a goat for ₹7850 and sold it for ₹8325. Find whether he made profit or loss.
Since S.P > C.P, Salman made a Profit of ₹475 (₹8325 - ₹7850 = ₹475).
Solve Puzzle
-
Horizontal (Across):
1) 9 + 9 = 18
4) 7 + 8 = 15
5) 9 + 7 = 16
6) 8 - 2 = 6
8) 5 + 7 = 12
10) 9 - 4 = 5 -
Vertical (Down):
1) 8 - 7 = 1
2) 13 - 5 = 8
3) 7 - 6 = 1, 9 + 6 = 15
4) 1 + 0 = 1
5) 8 + 8 = 16
6) 12 - 6 = 6
8) 3 - 2 = 1
9) 9 - 7 = 2
Page 102
Improve Your Learning
-
1. There were some books in a school. After distributing 297 books, 1,390 books remained. Ravi says that the library originally had 1,687 books. Do you agree with Ravi? Explain your answer using the relationship between addition and subtraction.
Original books = Remaining books + Distributed books
1390 + 297 = 1687.
Verification: 1687 - 297 = 1390.
Yes, I agree with Ravi. -
2. A vendor purchased 4260 mangoes from a garden. While transporting them from the garden to the shop, 52 mangoes were damaged. Afterwards, the vendor sold 2548 mangoes. Determine the number of mangoes that the vendor still has.
Total mangoes = 4260
Good mangoes left after damage = 4260 - 52 = 4208
Mangoes remaining after sale = 4208 - 2548 = 1660 mangoes. -
3. A customer's electricity bill shows the meter readings: Previous Reading = 29381, Present Reading = 30122. How many units of electricity were used between the previous and present readings?
Units used = 30122 - 29381 = 741 units.
-
4. Meena had 40 more stickers than Sreeja. Later, Sreeja gave 15 stickers to Meena. Now, by how many stickers did Meena's collection exceed Sreeja's?
Initial difference = 40
When Sreeja gives 15 stickers to Meena, Sreeja decreases by 15 and Meena increases by 15.
New difference = 40 + 15 + 15 = 70 stickers. -
5. Identify the correct mathematical statement:
Answer: b) 8500 - 2000 = 9500 - 3000 (Both equal 6500) and d) 3000 - 500 = 2000 + 500 (Both equal 2500).
-
6. Eswar bought watermelons for ₹2550. He sold them for ₹3100.
a) What is the cost price of watermelons?
b) What is the selling price of watermelons?
c) Has Eswar made a profit or loss? Find the answer.a) Cost Price = ₹2550
b) Selling Price = ₹3100
c) Since S.P > C.P, Eswar made a Profit.
Profit = ₹3100 - ₹2550 = ₹550.
