Samacheer Kalvi Class 5 Maths Solutions Term 1 Chapter 2 Numbers Exercise 2.5

Question 1. Find the sum.
Answer:

  6875
   637
 54300
    + 54
 -------
  61866

  32567
     78
   4324
  + 5000
 -------
  41969

To find the sum, we carefully align the numbers by their place values and add each column from right to left, carrying over when needed. This method ensures all digits are added correctly.
In simple words: We put the numbers one below the other, making sure the ones digits, tens digits, and so on, line up. Then we add them column by column, starting from the right.

🎯 Exam Tip: Always align numbers correctly by their place values (ones, tens, hundreds) before adding to prevent errors, especially with larger numbers.

 

Question 2. Add the following
a. 19732 + 24105 + 525 + 48
b. 241605 + 34788 + 5003 + 2052
c. 1000 + 250787 + 3574 + 43
d. 7 + 65 + 324 + 52342
Answer:
a.

  19732
  24105
    525
   + 48
 -------
  44410

b.

  241605
   34788
    5003
   + 2052
 --------
  283448

c.

  250787
    1000
    3574
     + 43
 --------
  255404

d.

      7
     65
    324
  + 52342
 -------
  52738

Adding a list of numbers involves carefully writing them down, one below the other, aligning by place value. Then, sum each column starting from the right, making sure to carry over any tens to the next column. This systematic approach helps in getting the correct total.
In simple words: To add many numbers, write them vertically so all the numbers in the "ones" place line up, all the "tens" line up, and so on. Then add each column, moving from right to left, carrying over when a sum is more than nine.

🎯 Exam Tip: When adding several numbers, always double-check your calculations, especially the carrying-over process, to avoid small mistakes that lead to a wrong final sum.

 

Question 3. The populations of different villages in a panchayat are 980, 3254, 4125, 687, and 6786. What is the total population?
Answer:

    980
   3254
   4125
    687
  + 6786
 --------
  15832

To find the total population, we need to add the population of all the villages together. We add up all the numbers by carefully aligning them according to their place value and summing each column. The total population is the sum of all individual village populations, representing the entire community.
In simple words: To find the total number of people, just add up all the people from each village. Put the numbers under each other and sum them up.

🎯 Exam Tip: When solving word problems involving total quantities, identify all the numbers that need to be added and ensure they are correctly transferred and aligned for calculation.

 

Question 4. Ramu bought some household things. The price list is given below. Find the total cost? Fan - Rs. 3,250 Fridge - Rs. 26,437 Television - Rs. 18,520 Iron box - Rs. 940 Cot - Rs. 15,520
Answer:
Fan = Rs. 3,250
Fridge = Rs. 26,437
Television = Rs. 18,520
Iron box = Rs. 940
Cot = Rs. 15,520
Total cost = Rs. 64667
To find the total cost, we add the price of each item Ramu bought. We list all the prices and sum them up, being careful to align the digits correctly. This will give us the complete amount Ramu spent on his household items.
In simple words: To find out how much Ramu spent in total, add up the price of the fan, fridge, TV, iron box, and cot.

🎯 Exam Tip: For problems involving money, always remember to include the currency symbol (Rs.) in your final answer and ensure all given prices are accurately summed up.

 

Question 5. A day's sales of different vegetables in a vegetable shop is as follows: Brinjals 4,500, Tomato Rs. 7,800, Onion Rs. 26,500, Potato Rs. 7,825 and Beetroot Rs. 825. Find the total amount of sales
Answer:
Brinjals = Rs. 4,500
Tomato = Rs. 7,800
Onion = Rs. 26,500
Potato = Rs. 7,825
Beetroot = Rs. 825
Total sales amount = Rs. 47,450
To find the total amount of sales, we simply add the sales amount for each type of vegetable. By summing these individual sales figures, we get the complete revenue the shop made from selling vegetables on that day. This total helps the shopkeeper know how much money was earned.
In simple words: To find the total money made from selling vegetables, add up the money from selling brinjals, tomatoes, onions, potatoes, and beetroots.

🎯 Exam Tip: In problems calculating total sales, list each item's sales amount clearly before performing the addition, and make sure to include the currency unit in your final answer.