CBSE Class 3 Mathematics Addition Assignment

Q1. Find the sum.
a) 562 + 324
Answer:
H T O
5 6 2
+ 3 2 4
8 8 6
Sum = \(562 + 324 = 886\)
In simple words: Add the ones, tens, and hundreds columns separately to get 886.

Exam Tip: Always start adding from the ones column on the right.

Q1. Find the sum.
b) 487 + 510
Answer:
H T O
4 8 7
+ 5 1 0
9 9 7
Sum = \(487 + 510 = 997\)
In simple words: Add digit by digit from right to left to get 997.

Exam Tip: Check each column carefully to avoid silly addition mistakes.

Q1. Find the sum.
c) 943 + 036
Answer:
H T O
9 4 3
+ 0 3 6
9 7 9
Sum = \(943 + 36 = 979\)
In simple words: Adding 36 to 943 gives 979.

Exam Tip: A zero in the hundreds place of the second number means the value remains unchanged in that column.

Q2. Write in columns and add.
a) 4561 + 2127
Answer:
Th H T O
4 5 6 1
+ 2 1 2 7
6 6 8 8
Sum = \(4561 + 2127 = 6688\)
In simple words: Align the numbers by place value and add them to get 6688.

Exam Tip: Proper alignment of digits under thousands, hundreds, tens, and ones is essential.

Q2. Write in columns and add.
b) 4865 + 3124
Answer:
Th H T O
4 8 6 5
+ 3 1 2 4
7 9 8 9
Sum = \(4865 + 3124 = 7989\)
In simple words: Add the columns to find the total 7989.

Q2. Write in columns and add.
c) 7957 + 2031
Answer:
Th H T O
7 9 5 7
+ 2 0 3 1
9 9 8 8
Sum = \(7957 + 2031 = 9988\)
In simple words: Add column by column to get 9988.
Exam Tip: Watch out for any carrying over, though this problem requires none.

Q3. Write in columns and find the sum.
a) 982 + 769
Answer:
Th H T O
9 8 2
+ 7 6 9
1 7 5 1
Sum = \(982 + 769 = 1751\)
In simple words: Add with regrouping to get 1751.

Exam Tip: Remember to write down the carried-over digit on top of the next column.

Q3. Write in columns and find the sum.
b) 527 + 794
Answer:
Th H T O
5 2 7
+ 7 9 4
1 3 2 1
Sum = \(527 + 794 = 1321\)
In simple words: Add the numbers column by column with carrying to get 1321.

Exam Tip: Double-check your carry-over steps when sums exceed 9.

Q3. Write in columns and find the sum.
c) 394 + 879
Answer:
Th H T O
3 9 4
+ 8 7 9
1 2 7 3
Sum = \(394 + 879 = 1273\)
In simple words: Combine the numbers vertically to get 1273.

Exam Tip: Neat handwriting helps prevent alignment errors in columns.

Q4. Find the sum.
a) 459 + 656 + 904
Answer:
4 5 9
6 5 6
+ 9 0 4
2 0 1 9
Sum = \(459 + 656 + 904 = 2019\)
In simple words: Add all three three-digit numbers together to get 2019.

Exam Tip: When adding three numbers, write them vertically and align all units, tens, and hundreds.

Q4. Find the sum.
b) 869 + 324 + 395
Answer:
8 6 9
3 2 4
+ 3 9 5
1 5 8 8
Sum = \(869 + 324 + 395 = 1588\)
In simple words: Add the three numbers to get 1588.

Exam Tip: Sum the ones column first, write the last digit, and carry over the remaining value.

Q4. Find the sum.
c) 589 + 746 + 982
Answer:
5 8 9
7 4 6
+ 9 8 2
2 3 1 7
Sum = \(589 + 746 + 982 = 2317\)
In simple words: Add the three values together to arrive at 2317.

Exam Tip: Take your time with column additions involving larger numbers.

Q5. A vegetable seller earned Rs. 957 on Monday, Rs. 678 on Tuesday and Rs. 986 on Wednesday. Find the total amount earned by him in three days.
Answer:
Amount earned on Monday = Rs. 957
Amount earned on Tuesday = Rs. 678
Amount earned on Wednesday = Rs. 986
Total amount earned = \(957 + 678 + 986\)
9 5 7
6 7 8
+ 9 8 6
2 6 2 1
Total amount earned = Rs. 2621
In simple words: Add the earnings of all three days to find the total amount.

Exam Tip: Always include units like Rs. in word problems.

Q6. There were 759 packets of milk in a shop. 699 more packets were delivered at noon. How many packets of milk are there in all?
Answer:
Initial number of milk packets = 759
Packets delivered at noon = 699
Total packets of milk = \(759 + 699\)
7 5 9
+ 6 9 9
1 4 5 8
Total packets in all = 1458
In simple words: Add the initial packets and the newly delivered packets together.

Exam Tip: Keywords like "in all" indicate that addition should be performed.

Q7. Frame three word problems for the following addition fact.
\(724 + 368 = ?\)
Answer:
Problem 1: A library has 724 story books and 368 science books. How many books are there in the library in all?
Problem 2: Rahul collected 724 stamps last year and 368 stamps this year. What is the total number of stamps he has collected?
Problem 3: A factory produced 724 toys in the morning shift and 368 toys in the evening shift. Find the total number of toys produced on that day.
In simple words: Create real-life situations where two quantities are combined to find a total.

Exam Tip: Ensure your word problems clearly state two given quantities and ask for a combined total.