Worksheet - 1 | Sub Topic : Recall Addition
I) Add the following numbers.
-
a) 1759 + 6950
1 7 5 9
+ 6 9 5 0
---------
8 7 0 9
---------
Answer: 8709 -
b) 7850 + 1858
7 8 5 0
+ 1 8 5 8
---------
9 7 0 8
---------
Answer: 9708 -
c) 5709 + 5587
5 7 0 9
+ 5 5 8 7
---------
1 1 2 9 6
---------
Answer: 11296
II) Do the following additions.
-
a) 8047 + 6113 = ________
8047 + 6113 = 14160
-
b) 1235 + 6712 = ________
1235 + 6712 = 7947
III) & IV) Word Problems
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III) Find the sum of predecessor and successor of 1420?
Predecessor of 1420 = 1420 - 1 = 1419
Successor of 1420 = 1420 + 1 = 1421
Sum = 1419 + 1421 = 2840
Answer: 2840 -
IV) Rani has ₹6589, Siva has ₹1508 more money than Rani. Find the total amount with Rani and Siva?
Money with Rani = ₹ 6,589
Money with Siva = ₹ 6,589 + ₹ 1,508 = ₹ 8,097
Total amount with Rani and Siva = ₹ 6,589 + ₹ 8,097 = ₹ 14,686
Answer: ₹ 14,686
Worksheet - 2 | Sub Topic : Addition
I) Do the following additions.
-
a) 76,921 + 58,147
7 6 9 2 1
+ 5 8 1 4 7
-----------
1 3 5 0 6 8
-----------
Answer: 1,35,068 -
b) 42,543 + 79,153
4 2 5 4 3
+ 7 9 1 5 3
-----------
1 2 1 6 9 6
-----------
Answer: 1,21,696 -
c) 22,222 + 99,999
2 2 2 2 2
+ 9 9 9 9 9
-----------
1 2 2 2 2 1
-----------
Answer: 1,22,221
II) Do the following.
-
Before calculating, estimate the answers for the following additions. Then find exact sums.
a) 61,800 + 50,027Estimation: 62,000 + 50,000 = 1,12,000
Exact Sum: 61,800 + 50,027 = 1,11,827 -
b) 91,447 + 37,466
Estimation: 91,000 + 37,000 = 1,28,000
Exact Sum: 91,447 + 37,466 = 1,28,913 -
Were your estimations close to the exact sums? Explain.
Yes, our estimations are very close to the exact sums because rounding off to the nearest thousands provides an approximate value that is very near to the actual sum.
Worksheet - 2 (Continued)
-
III) There are 78,449 sacks of flour and 55,774 sacks of rice in a store. The shopkeeper receives 48,557 sacks of pulses today. Then,
a) What is the total number of sacks in the store?Number of flour sacks = 78,449
Number of rice sacks = 55,774
Number of pulses sacks = 48,557
Total number of sacks = 78,449 + 55,774 + 48,557 = 1,82,780
Answer: 1,82,780
b) Write the mathematical statement.78,449 + 55,774 + 48,557 = 1,82,780 -
IV) The prices of the three items are given below.
Cost of the Office chair = ₹ 8,699
Cost of the Table = ₹ 3,650
Cost of the white board = ₹ 1,550
Sumathi wants to buy 1 office chair, 1 table and 1 white board. What is the total amount she has to pay?Cost of 1 office chair = ₹ 8,699
Cost of 1 table = ₹ 3,650
Cost of 1 white board = ₹ 1,550
Total amount she has to pay = ₹ 8,699 + ₹ 3,650 + ₹ 1,550 = ₹ 13,899
Answer: ₹ 13,899
Worksheet - 3 | Sub Topic : Subtractions
I) Do the following Subtractions.
-
58,397 - 45,265
5 8 3 9 7
- 4 5 2 6 5
-----------
1 3 1 3 2
-----------
Answer: 13,132 -
52,131 - 33,267
5 2 1 3 1
- 3 3 2 6 7
-----------
1 8 8 6 4
-----------
Answer: 18,864 -
11,111 - 9,999
1 1 1 1 1
- 9 9 9 9
-----------
1 1 1 2
-----------
Answer: 1,112
II) What number should be written in the box?
-
(a) 16,225 - [ ] = 10,200
16,225 - 10,200 = 6,025
Box value = 6,025 -
(b) [ ] - 19,988 = 58,377
58,377 + 19,988 = 78,365
Box value = 78,365
III) & IV) Questions
-
III) Hima has ₹9679. Ajay has ₹1406 less than Hima. How much money does Ajay have?
Money with Hima = ₹ 9,679
Difference = ₹ 1,406
Money with Ajay = ₹ 9,679 - ₹ 1,406 = ₹ 8,273
Answer: ₹ 8,273 -
IV) If the difference between a number and the new number formed by reversing its digits is 6174, what are those two numbers?
Explanation: Reversing the digits of 7641 gives 1467. Then, 7641 - 1467 = 6174.
Answer: B) 7641, 1467
Worksheet - 4 | Sub Topic : Addition and Subtraction
I) Observe the given table, do the following.
| S.no. | Item name | cost in rupees |
|---|---|---|
| 1. | T.V | 35,000 |
| 2. | fridge | 46,000 |
| 3. | cell phone | 24,000 |
| 4. | cooler | 15,000 |
| 5. | Fan | 1,500 |
| 6. | Study light | 800 |
-
1) If you have ₹50,000 rupees, select which two items you can buy with that amount.
(a) T.V (₹ 35,000)
(b) cooler (₹ 15,000)
(Total: ₹ 35,000 + ₹ 15,000 = ₹ 50,000)
II) Do the following.
-
(a) Find the total price of the TV and fridge.
Price of TV = ₹ 35,000
Price of fridge = ₹ 46,000
Total price = ₹ 35,000 + ₹ 46,000 = ₹ 81,000
Answer: ₹ 81,000 -
(b) Find the difference between the prices of the cell phone and cooler.
Price of cell phone = ₹ 24,000
Price of cooler = ₹ 15,000
Difference = ₹ 24,000 - ₹ 15,000 = ₹ 9,000
Answer: ₹ 9,000
Worksheet - 4 (Continued)
-
III) Find the Highest price and the lowest Price from the table.
Highest Price: ₹ 46,000 (fridge)
lowest Price: ₹ 800 (Study light)
i) Add the Highest price and lowest Price.46,000 + 800 = 46,800
Answer: ₹ 46,800
ii) Subtract the lowest Price from the Highest price.46,000 - 800 = 45,200
Answer: ₹ 45,200 -
IV) Akash bought one cell phone, one fan and one study light. He got ₹2500 concession. How much does he need to pay finally?
Cost of cell phone = ₹ 24,000
Cost of fan = ₹ 1,500
Cost of study light = ₹ 800
Total cost = ₹ 24,000 + ₹ 1,500 + ₹ 800 = ₹ 26,300
Concession = ₹ 2,500
Final amount to pay = ₹ 26,300 - ₹ 2,500 = ₹ 23,800
Answer: ₹ 23,800
Worksheet - 5 | Sub Topic : Addition and Subtraction
I) Write the subtraction facts for given additions.
| Addition | Subtraction |
|---|---|
| 3482 + 1237 = 4719 | 4719 - 1237 = 3482 |
| 5806 + 3784 = 9590 | 9590 - 3784 = 5806 |
| 3816 + 4785 = 8601 | 8601 - 4785 = 3816 |
II) Do the following.
-
a) 56384 + 48364 - 38486
Step 1: 56384 + 48364 = 104748
Step 2: 104748 - 38486 = 66262
Answer: 66,262 -
b) 43768 + 4325 - 5238
Step 1: 43768 + 4325 = 48093
Step 2: 48093 - 5238 = 42855
Answer: 42,855
III) & IV) Word Problems
-
III) What should be added to the sum of 54,656 and 13,426 to get 71,181?
Sum of numbers = 54,656 + 13,426 = 68,082
Required number = 71,181 - 68,082 = 3,099
Answer: 3,099 -
IV) Eshwar earns rupees ₹37,645 and his wife earns ₹25,367. If they spent ₹38,600. How much money do they save?
Eshwar's earning = ₹ 37,645
Wife's earning = ₹ 25,367
Total earnings = ₹ 37,645 + ₹ 25,367 = ₹ 63,012
Amount spent = ₹ 38,600
Savings = ₹ 63,012 - ₹ 38,600 = ₹ 24,412
Answer: ₹ 24,412
Worksheet - 6 | Sub Topic : Addition and subtraction
I) Do the following.
- a) 78360 + 38465 = 38465 + 78360
- b) 52014 + 72541 = 52014 + 72541
- c) 21543 + 0 = 21543
- d) 67380 + 0 = 0 + 67380
II) Write True or False to the following statements.
| Statement | Ans |
|---|---|
| (i) If you add 0 to 54,321, then the sum 54,321. | True |
| (ii) The sum of 1,250 and 8,750 is different from the sum of 8,750 and 1,250. | False |
| (iii) 12,450 + 0 = 12,451 | False |
| (iv) The sum of 10,000 and 20,000 is exactly the same as the sum of 20,000 and 10,000. | True |
III) & IV) Questions
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III) a) Find the sum of 34,685 and 26,366 and also find the sum of 26,366 and 34,685. What do you conclude (by comparing)?
34,685 + 26,366 = 61,051
26,366 + 34,685 = 61,051
Conclusion: The sum remains the same even if the order of the numbers is changed (Commutative property of addition). -
IV) 1) Which number must be added to 9,325 to get 9,325 again?
Answer: B) 0
Worksheet - 7 | Sub Topic : Estimation on Sum and Difference
I) Estimate the following sums/differences to the nearest thousands.
-
a) 58, 397 + 45, 965
58,397 rounds to → 58,000
45,965 rounds to → 46,000
Estimated Sum = 58,000 + 46,000 = 1,04,000 -
b) 25, 098 - 14, 992
25,098 rounds to → 25,000
14,992 rounds to → 15,000
Estimated Difference = 25,000 - 15,000 = 10,000
II) Observe the following sums or differences and match with their estimations to thousands.
| A | Ans | B |
|---|---|---|
| (i) 36,541 + 12,112 | ( D ) | A) 7000 |
| (ii) 25,631 + 56,121 | ( C ) | B) 53000 |
| (iii) 96,521 - 43,164 | ( B ) | C) 82000 |
| (iv) 8,925 - 2,222 | ( A ) | D) 49000 |
III) & IV) Questions
-
III) The estimated sum (nearest thousand) of two numbers is 90,000. One number is 46,780. What could be the second number?
Estimated sum = 90,000
Estimated value of first number (46,780 rounds to) = 47,000
Estimated value of second number = 90,000 - 47,000 = 43,000
Answer: 43,220 (or any number that rounds to 43,000) -
IV) Rani collected ₹3578 for a charity program and Meena collected ₹2456. Estimate how much more money Rani collected than Meena.
Explanation: ₹3578 rounds to 4000 (or 3600); ₹2456 rounds to 2000 (or 2500). Difference to nearest thousand: 4000 - 2000 = 2000; to nearest hundred: 3600 - 2500 = 1100 ≈ 1000. Closest option is C.
Answer: C) 1000
Worksheet - 8 | Sub Topic : Profit and Loss
I) Do the following.
A) Find profit or loss?
| S.no | cost price | selling price | profit/loss | how much? |
|---|---|---|---|---|
| 1. | ₹2600 | ₹2400 | Loss | ₹ 200 |
| 2. | ₹5000 | ₹6000 | Profit | ₹ 1000 |
| 3. | ₹6200 | ₹5000 | Loss | ₹ 1200 |
| 4. | ₹8000 | ₹8999 | Profit | ₹ 999 |
B) Fill the blanks in the given table with suitable amounts.
| S.no | cost price | selling price | profit/loss | how much? |
|---|---|---|---|---|
| 1. | ₹ 1200 | ₹1000 | loss | 200 |
| 2. | ₹2500 | ₹ 3500 | profit | 1000 |
| 3. | ₹ 8500 | ₹10000 | profit | 1500 |
| 4. | ₹6800 | ₹ 6300 | loss | 500 |
II) Question
-
II) Shankar bought a smart phone at ₹ 18,700 and sold it for ₹ 15,500. Did he lose or gain? By how much?
Cost Price = ₹ 18,700
Selling Price = ₹ 15,500
Since Cost Price > Selling Price, he suffered a Loss.
Loss = ₹ 18,700 - ₹ 15,500 = ₹ 3,200
Answer: Loss of ₹ 3,200
Worksheet - 8 (Continued)
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III) Dhanu is an owner of a hotel. At the end of a particular day he received ₹58,524. Then, he calculated that he earned ₹7,524 profit. How much money did he invest on that day?
Total Revenue / Selling Price = ₹ 58,524
Profit = ₹ 7,524
Investment / Cost Price = Revenue - Profit = ₹ 58,524 - ₹ 7,524 = ₹ 51,000
Answer: ₹ 51,000 -
IV) A carpenter sold a sofa for ₹ 5,450 and made a profit of ₹ 750. Which of the following equations shows the relation between the selling price, the cost price and the profit in this situation?
Cost price = Selling Price - Profit
Answer: A) Cost price = 5,450 - 750
Self Assessment
-
I) Solve the problem.
4986 + 3470 - 5467 = ?Step 1: 4986 + 3470 = 8456
Step 2: 8456 - 5467 = 2989
Answer: 2989 -
II) Vinay had 96 stamps in his collection. He gave 25 to Syed. Then Syed has 100 stamps now.
a. How many stamps did Syed have in the beginning?Stamps Syed has now = 100
Stamps given by Vinay = 25
Stamps Syed had in the beginning = 100 - 25 = 75
Answer: 75
b. How many stamps does Vinay have left?Stamps Vinay had = 96
Stamps given away = 25
Stamps left with Vinay = 96 - 25 = 71
Answer: 71 -
III) Shabana purchased 2500g laddus, 1500g halwa, 750g mysorepak, 500g Jilebi. Find out the total weight of sweets she purchased?
Weight of laddus = 2500 g
Weight of halwa = 1500 g
Weight of mysorepak = 750 g
Weight of Jilebi = 500 g
Total weight = 2500 + 1500 + 750 + 500 = 5250 g (or 5 kg 250 g)
Answer: 5250 g (5 kg 250 g)
Self Assessment (Continued)
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IV) A school library has 12,450 books. The school bought 3,875 new books in June. Later, 2,690 damaged books were removed. How many books are there in the library now?
Initial number of books = 12,450
New books added in June = 3,875
Total books = 12,450 + 3,875 = 16,325
Damaged books removed = 2,690
Remaining books = 16,325 - 2,690 = 13,635
Answer: 13,635 books -
V) A vegetable seller buys a basket of Tomatoes for 800. He spends 150 on transport. He sells the basket for 1000 and says he made a profit of 200. Is his statement correct? Give a reason for your answer.
Cost of tomatoes = ₹ 800
Transport expense = ₹ 150
Total Cost Price = ₹ 800 + ₹ 150 = ₹ 950
Selling Price = ₹ 1,000
Actual Profit = ₹ 1,000 - ₹ 950 = ₹ 50
His statement that he made a profit of ₹ 200 is Incorrect because he did not include the transportation cost of ₹ 150 in his total cost price. -
VI) Create a word problem on addition and subtraction by observing the prices of the following items.
[ Notebook: ₹40, Pen: ₹30, School Bag: ₹300 ]Word Problem:
Rahul went to a stationery shop with ₹500. He bought a school bag for ₹300, a notebook for ₹40, and a pen for ₹30. How much total money did he spend, and how much money was left with him?
Solution:
Total money spent = ₹ 300 + ₹ 40 + ₹ 30 = ₹ 370
Money left = ₹ 500 - ₹ 370 = ₹ 130
