CBSE Class 4 Maths Subtract the following Set 03

Assignment - 11

Subtract the following.

Question 1. 69 - 13 =
Answer: \(69 - 13 = 56\)
In simple words: Subtract 13 from 69 by subtracting the ones digits and tens digits separately.

Exam Tip: Always align numbers by their place value columns before subtracting.

Question 2. 97 - 68 =
Answer: \(97 - 68 = 29\)
In simple words: Borrow 1 from the tens place since 7 is smaller than 8, making it \(17 - 8 = 9\), then subtract the tens digits.

Exam Tip: Remember to reduce the tens digit by 1 after borrowing.

Question 3. 73 - 16 =
Answer: \(73 - 16 = 57\)
In simple words: Regroup 1 ten as 10 ones, so \(13 - 16\) becomes \(13 - 6 = 7\) and the remaining tens are \(6 - 1 = 5\).

Exam Tip: Check your subtraction by adding the answer back to the second number (57 + 16 = 73).

Question 4. 91 - 15 =
Answer: \(91 - 15 = 76\)
In simple words: Borrow from the tens column to subtract 5 from 11, resulting in 6 ones and 7 tens.

Exam Tip: Take extra care when borrowing across a 1 in the ones place.

Question 5. 97 - 61 =
Answer: \(97 - 61 = 36\)
In simple words: Subtract ones (\(7 - 1 = 6\)) and tens (\(9 - 6 = 3\)) directly without borrowing.

Exam Tip: Look out for problems where no borrowing is needed to save time.

Question 6. 38 - 12 =
Answer: \(38 - 12 = 26\)
In simple words: Subtract 2 from 8 to get 6, and 1 from 3 to get 2.

Exam Tip: Direct subtraction is fast and straightforward when top digits are larger.

Question 7. 57 - 40 =
Answer: \(57 - 40 = 17\)
Answer: Subtracting 40 from 57 leaves 17 since the ones digits remain unchanged.

Exam Tip: When subtracting a multiple of 10, only the tens digit changes.

Question 8. 89 - 28 =
Answer: \(89 - 28 = 61\)
In simple words: Subtract 8 ones from 8 ones to get 0, and 2 tens from 8 tens to get 6 tens, giving 61.

Exam Tip: Notice when ones digits are identical, their difference is zero.

Question 9. 55 - 14 =
Answer: \(55 - 14 = 41\)
In simple words: Subtract 4 from 5 to get 1, and 1 from 5 to get 4.

Exam Tip: Align columns properly for accurate column-wise subtraction.

Question 10. 50 - 29 =
Answer: \(50 - 29 = 21\)
In simple words: Borrow from the tens place, making the 0 a 10, so \(10 - 9 = 1\) and the tens become \(4 - 2 = 2\).

Exam Tip: Be careful when subtracting from a number ending in zero.

Question 11. 74 - 31 =
Answer: \(74 - 31 = 43\)
In simple words: Subtract 1 from 4 to get 3, and 3 from 7 to get 4.

Exam Tip: No regrouping is needed when all top digits are greater than or equal to bottom digits.

Question 12. 96 - 82 =
Answer: \(96 - 82 = 14\)
In simple words: Subtract 2 from 6 to get 4, and 8 from 9 to get 1.

Exam Tip: Work from right to left starting with the ones column.

Question 13. 79 - 24 =
Answer: \(79 - 24 = 55\)
In simple words: Subtract 4 from 9 to get 5, and 2 from 7 to get 5.

Exam Tip: Double check your arithmetic to avoid simple calculation errors.

Question 14. 39 - 31 =
Answer: \(39 - 31 = 8\)
In simple words: Subtract 1 from 9 to get 8, and 3 from 3 to get 0.

Exam Tip: A leading zero in the tens place can be omitted.

Question 15. 31 - 18 =
Answer: \(31 - 18 = 13\)
In simple words: Borrow 1 ten to make 11 ones, then \(11 - 8 = 3\) and \(2 - 1 = 1\).

Exam Tip: Always remember to decrease the tens digit after borrowing.

Question 16. 74 - 71 =
Answer: \(74 - 71 = 3\)
In simple words: Subtract 1 from 4 to get 3, and 7 from 7 to get 0.

Exam Tip: Equal tens digits cancel out, leaving only the difference in the ones.

Question 17. 17 - 14 =
Answer: \(17 - 14 = 3\)
In simple words: Subtract 4 from 7 to get 3, and 1 from 1 to get 0.

Question 18. 79 - 43 =
Answer: \(79 - 43 = 36\)
In simple words: Subtract 3 from 9 to get 6, and 4 from 7 to get 3.

Exam Tip: Ensure digits are kept in their correct columns.

Question 19. 52 - 25 =
Answer: \(52 - 25 = 27\)
In simple words: Borrow 1 ten to make 12 ones, so \(12 - 5 = 7\) and the remaining tens are \(4 - 2 = 2\).

Exam Tip: This classic problem requires careful borrowing from the tens place.

Question 20. 92 - 17 =
Answer: \(92 - 17 = 75\)
In simple words: Borrow 1 ten to make 12 ones, so \(12 - 7 = 5\) and the remaining tens are \(8 - 1 = 7\).

Exam Tip: Verify your borrow operation by checking the tens column decrease.

Question 21. 57 - 36 =
Answer: \(57 - 36 = 21\)
In simple words: Subtract 6 from 7 to get 1, and 3 from 5 to get 2.

Exam Tip: Direct subtraction works here since 7 is greater than 6 and 5 is greater than 3.

Question 22. 95 - 32 =
Answer: \(95 - 32 = 63\)
In simple words: Subtract 2 from 5 to get 3, and 3 from 9 to get 6.

Exam Tip: Always subtract ones first, then tens.

Question 23. 43 - 40 =
Answer: \(43 - 40 = 3\)
In simple words: Subtracting 40 from 43 leaves the 3 ones.

Exam Tip: Subtracting tens when they are equal leaves only the ones value.

Question 24. 92 - 75 =
Answer: \(92 - 75 = 17\)
In simple words: Borrow 1 ten to make 12 ones, so \(12 - 5 = 7\) and the remaining tens are \(8 - 7 = 1\).

Exam Tip: Always double check your borrowing step when the top ones digit is smaller.