CBSE Class 3 Mathematics Addition and Subtraction Set 01

Addition & Subtraction

1) Fill in the blanks :

Question 1. The numbers being added are called ____________________
Answer: addends
In simple words: The numbers that we add together are known as addends.

Exam Tip: Remember the basic vocabulary of addition: addend + addend = sum.

Question 2. The result of addition of the addends are called the _______________.
Answer: sum
In simple words: The total obtained after adding numbers is called the sum.

Exam Tip: Sum refers to the final answer of an addition problem.

Question 3. Zero added to any number is equal to the ______________.
Answer: number itself
In simple words: Adding zero to any number does not change its value.

Exam Tip: This is known as the additive property of zero.

Question 4. Zero subtracted from any number is equal to __________________.
Answer: the number itself
In simple words: When you take away zero from a number, the number remains the same.

Exam Tip: Any number minus zero equals the original number.

Question 5. While adding if we change the order of the numbers , the result will be the 
Answer: same
In simple words: Changing the order of addends does not change the sum (e.g., \(2 + 3 = 3 + 2\)).

Exam Tip: This is called the commutative property of addition.

Question 6. The result of subtraction is called the ________________
Answer: difference

In simple words: The answer you get when you subtract one number from another is the difference.

Exam Tip: Always associate subtraction with finding the difference between quantities.

2) Add

Question 1. \(7348 + 2651\)
Answer: 9999
\(7348 + 2651 = 9999\)
In simple words: Add the digits column by column from right to left.

Exam Tip: Always align numbers by their place values (ones, tens, hundreds, thousands) before adding.

Question 2. \(4527 + 5462\)
Answer: 9989
\(4527 + 5462 = 9989\)
In simple words: Sum the respective digits in each place value column.

Exam Tip: Double-check your column addition to avoid silly calculation errors.

Question 3. \(5678 + 4321\)
Answer: 9999
\(5678 + 4321 = 9999\)
In simple words: Add ones to ones, tens to tens, hundreds to hundreds, and thousands to thousands.

Question 4. \(3462 + 2321 + 4215\)
Answer: 9998
\(3462 + 2321 = 5783\)
\(5783 + 4215 = 9998\)
In simple words: Add the first two numbers, then add the third number to that total.

Exam Tip: For three numbers, add them in two steps or line them up in three rows.

Question 5. \(1234 + 5653 + 3112\)
Answer: 9999
\(1234 + 5653 = 6887\)
\(6887 + 3112 = 9999\)
In simple words: Combine all three values step by step.

Exam Tip: Ensure all columns are straight.

Question 6. \(3132 + 4545 + 2002\)
Answer: 9679
\(3132 + 4545 = 7677\)
\(7677 + 2002 = 9679\)
In simple words: Add the numbers sequentially to get the final sum.

Exam Tip: Take care with carrying over values from the tens column to the hundreds column.

Question 7. \(2346 + 4227\)
Answer: 6573
\(2346 + 4227 = 6573\)
In simple words: Add column by column from right to left with carrying.

Exam Tip: Write carried digits neatly above the next column.

Question 8. \(5670 + 2459\)
Answer: 8129
\(5670 + 2459 = 8129\)
In simple words: Add corresponding digits and carry over where necessary.

Exam Tip: Watch out for carries in the tens and hundreds columns.

Question 9. \(4936 + 4093\)
Answer: 9029
\(4936 + 4093 = 9029\)
In simple words: Perform column addition carefully.

Exam Tip: Double check your addition in the hundreds column (\(9 + 0 + 1\) (carried) = 10).

Question 10. \(7654 + 1986\)
Answer: 9640
\(7654 + 1986 = 9640\)
In simple words: Add ones, tens, hundreds, and thousands with respective carries.

Exam Tip: Accuracy in carrying over is essential here.

Question 11. \(8764 + 294\)
Answer: 9058
\(8764 + 294 = 9058\)
In simple words: Align 294 properly with the hundreds, tens, and ones places of 8764.

Exam Tip: Always right-align numbers of different digit lengths.

Question 12. \(6543 + 2879\)
Answer: 9422
\(6543 + 2879 = 9422\)
In simple words: Add the two 4-digit numbers column by column.

Question 13. \(6729 + 1450 + 1432\)
Answer: 9611
\(6729 + 1450 = 8179\)
\(8179 + 1432 = 9611\)
In simple words: Add the three numbers together sequentially.

Exam Tip: Line up all decimals or place values correctly.

Question 14. \(3645 + 1502 + 175\)
Answer: 5322
\(3645 + 1502 = 5147\)
\(5147 + 175 = 5322\)
In simple words: Sum the three numbers step by step.

Exam Tip: Ensure the 3-digit number 175 is right-aligned under the ones, tens, and hundreds columns.

Question 15. \(1967 + 2540 + 328\)
Answer: 4835
\(1967 + 2540 = 4507\)
\(4507 + 328 = 4835\)
In simple words: Add all three addends carefully.

Exam Tip: Watch out for carries in every column.

Question 16. \(4576 + 1234 + 2967\)
Answer: 8777
\(4576 + 1234 = 5810\)
\(5810 + 2967 = 8777\)
In simple words: Add the three numbers together.

Exam Tip: Double check your addition in the thousands column.

Question 17. \(1687 + 3800 + 1596\)
Answer: 7083
\(1687 + 3800 = 5487\)
\(5487 + 1596 = 7083\)
In simple words: Combine the numbers column by column with proper carrying.

Exam Tip: Take special care with zeros in 3800.

Question 18. \(7423 + 529 + 606\)
Answer: 8558
\(7423 + 529 = 7952\)
\(7952 + 606 = 8558\)
In simple words: Add the three numbers to find the total sum.

Exam Tip: Align smaller numbers correctly on the right.

3) Subtract :

Question 1. \(9876 - 4524\)
Answer: 5352
\(9876 - 4524 = 5352\)
In simple words: Subtract each digit of the lower number from the upper number.

Exam Tip: Subtract column by column starting from the ones place.

Question 2. \(5708 - 3206\)
Answer: 2502
\(5708 - 3206 = 2502\)
In simple words: Perform column-wise subtraction.

Exam Tip: Pay attention to zeros in the tens place.

Question 3. \(7645 - 6240\)
Answer: 1405
\(7645 - 6240 = 1405\)
In simple words: Subtract lower digits from upper digits.

Exam Tip: Ensure proper digit alignment.

Question 4. \(6745 - 4532\)
Answer: 2213
\(6745 - 4532 = 2213\)
In simple words: Subtract each corresponding place value.

Exam Tip: No borrowing is needed here; simply subtract directly.

Question 5. \(9342 - 6002\)
Answer: 3340
\(9342 - 6002 = 3340\)
In simple words: Subtract column by column from right to left.

Exam Tip: Zeros in the subtrahend make subtraction straightforward.

Question 6. \(8765 - 1432\)
Answer: 7333
\(8765 - 1432 = 7333\)
In simple words: Subtract each digit directly.

Exam Tip: Verify your subtraction in each column.

Question 7. \(4645 - 1839\)
Answer: 2806
\(4645 - 1839 = 2806\)
In simple words: Borrow when the top digit is smaller than the bottom digit.

Exam Tip: Borrow 1 from the tens column to make 5 into 15 in the ones column.

Question 8. \(9432 - 6942\)
Answer: 2490
\(9432 - 6942 = 2490\)
In simple words: Use borrowing across columns where needed.

Exam Tip: Be careful when borrowing from columns with zeros or smaller digits.

Question 9. \(8204 - 1295\)
Answer: 6909
\(8204 - 1295 = 6909\)
In simple words: Subtract with careful borrowing from neighboring columns.

Exam Tip: Borrowing across zero requires changing 0 to 9 and borrowing from the next higher place.

Question 10. \(1000 - 990\)
Answer: 10
\(1000 - 990 = 10\)
In simple words: Subtract 990 from 1000 by borrowing across the zeros.

Exam Tip: 1000 minus 990 is a classic mental math problem resulting in 10.

Question 11. \(5240 - 2754\)
Answer: 2486
\(5240 - 2754 = 2486\)
In simple words: Subtract using column borrowing.

Question 12. \(6373 - 2929\)
Answer: 3444
\(6373 - 2929 = 3444\)
In simple words: Perform subtraction with borrowing in the hundreds column.

Exam Tip: Check your work by adding the answer to 2929 to see if you get 6373.

Question 13. \(9090 - 999\)
Answer: 8091
\(9090 - 999 = 8091\)
In simple words: Subtract 999 from 9090 using proper borrowing steps.

Exam Tip: Align 999 correctly under the hundreds, tens, and ones places.

Question 14. \(7000 - 3762\)
Answer: 3238
\(7000 - 3762 = 3238\)
In simple words: Borrow across the zeros of 7000 to subtract 3762.

Exam Tip: When subtracting from a number with trailing zeros, convert zeros to 9s and the last nonzero digit to its predecessor minus 1.

Question 15. \(4321 - 2229\)
Answer: 2092
\(4321 - 2229 = 2092\)
In simple words: Subtract column by column with borrowing in the tens place.

Exam Tip: Verify each column subtraction carefully.

Question 16. \(1304 - 876\)
Answer: 428
\(1304 - 876 = 428\)
In simple words: Subtract 876 from 1304 using borrowing.

Exam Tip: Ensure proper right-alignment of the 3-digit number 876.

Question 17. \(6532 - 2649\)
Answer: 3883
\(6532 - 2649 = 3883\)
In simple words: Perform subtraction with multiple borrows.

Exam Tip: Double check your borrows in the tens and hundreds places.

Question 18. \(9876 - 5489\)
Answer: 4387
\(9876 - 5489 = 4387\)
In simple words: Subtract lower digits from upper digits with borrowing.

Exam Tip: Re-add your result to 5489 to confirm it equals 9876.

4) Word Problems based on Addition & Subtraction

Question 1. In three different sectors of a city, the number of people living are 7824, 3625 and 1123 respectively . What is the total number of people living in these sectors ?
Answer:
Number of people in sector 1 = 7824
Number of people in sector 2 = 3625
Number of people in sector 3 = 1123
Total number of people = \(7824 + 3625 + 1123\)
\(7824 + 3625 = 11449\)
\(11449 + 1123 = 12572\)
Total number of people living in these sectors = 12572
In simple words: Add the populations of all three sectors to find the total.

Exam Tip: Keyword "total" indicates that addition should be used.

Question 2. The population of a village is 4276, 2985 of them are males. Find the population of females.
Answer:
Total population of the village = 4276
Number of males = 2985
Population of females = Total population - Number of males
\(4276 - 2985 = 1291\)
Population of females = 1291
In simple words: Subtract the number of males from the total population to get the number of females.

Exam Tip: When given a total and one part, use subtraction to find the other part.

Question 3. The sum of two numbers is 7345. If one of the numbers is 3456, find the others.
Answer:
Sum of two numbers = 7345
Given number = 3456
Other number = Sum - Given number
\(7345 - 3456 = 3889\)
The other number is 3889
In simple words: Subtract the known number from the total sum to find the unknown number.

Exam Tip: Whenever a sum and one addend are given, use subtraction to find the missing addend.

Question 4. Saif earned Rs 9000 in a month and spent Rs 5496. Find his savings ?
Answer:
Total earnings = Rs 9000
Total spent = Rs 5496
Savings = Earnings - Spent
\(9000 - 5496 = 3504\)
Saif's savings = Rs 3504
In simple words: Subtract the amount spent from the total earnings to find the remaining savings.

Exam Tip: Savings equals money earned minus money spent.

Question 5. There are 2972 students in a school in which 1452 are boys. Find the number of the girls?
Answer:
Total students in the school = 2972
Number of boys = 1452
Number of girls = Total students - Number of boys
\(2972 - 1452 = 1520\)
Number of girls = 1520
In simple words: Subtract the number of boys from the total student count to find the number of girls.

Exam Tip: Use subtraction to separate a group into its constituent parts.

Question 6. Find the difference between greatest 4 digit number and least 4 digit number.
Answer:
Greatest 4-digit number = 9999
Least 4-digit number = 1000
Difference = Greatest 4-digit number - Least 4-digit number
\(9999 - 1000 = 8999\)
The difference is 8999
In simple words: Subtract the smallest 4-digit number from the largest 4-digit number.

Exam Tip: Greatest 4-digit number is 9999 and least 4-digit number is 1000.

Question 7. In a village there are 9236 women. The number of men is more than that of the woman by 125. What is the number of men in the village?
Answer:
Number of women = 9236
Number of men = Number of women + 125
\(9236 + 125 = 9361\)
Number of men in the village = 9361
In simple words: Add 125 to the number of women to find the total number of men.

Exam Tip: The phrase "more than" indicates addition when finding the larger quantity.