- Add and Subtract Whole Numbers
- Single Digit Addition
- Addition of 3 or More Single Digit Nnumbers
- Addition of Two 2-digit Numbers Without Carry
- Adding 2-digit Numbers and Single Digit Numbers
- Addition of Two 2-digit Numbers With Carry
- Addition With Carry to the Hundreds Place
- Addition of 2-digit, 3-digit and 4-digit Numbers
- Subtracting a Number From a 2-digit Number
- Subtraction of Two 2-digit Numbers Without Borrowing
- Subtraction of Two 2-digit Numbers With Borrowing
- Subtraction with Multiple Regrouping Steps
- Subtraction and Regrouping With Zeros
- Fact Families for Addition and Subtraction
- Addition or Subtraction of Whole Numbers (Word problems)
- Increasing or Decreasing Pattern from a Table of Values
- Selected Reading
- UPSC IAS Exams Notes
- Developer's Best Practices
- Questions and Answers
- Effective Resume Writing
- HR Interview Questions
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Subtraction of Two 2-digit Numbers With Borrowing
Subtract the numbers 74 − 57
We line up the numbers vertically.
In the ones column, we cannot subtract 7 from 4 as 7 is greater than 4. So we borrow a ten from tens column. We strike off 7 and write a 6 and put a 1 beside 4 to make it 14. Now we subtract 14 – 7 = 7. 7 is written down below ones column.
Next in the tens column, we subtract 6 − 5 = 1. 1 is written down below tens column. So the answer is 17.
Subtract 53 − 39
Align the numbers vertically.
In the ones column, we cannot subtract 9 from 3 as 9 is greater than 3. So we borrow a ten from 5 in the tens column. We strike off 5 and write a 4 to its left. We put a 1 to left of 3 to make it 13. (1 ten = 10 ones). Now we 13 − 9 = 4. 4 is written below ones column.
Next in the tens column, 4 – 3 = 1. 1 is then written below tens column and the final answer is 14.