Subtract numbers up to three digits

key notes :

Understanding Subtraction:

• Subtraction is the process of taking one number away from another.
• It involves a minuend (the number being subtracted from), a subtrahend (the number being subtracted), and a difference (the result).

Three-Digit Numbers:

• Three-digit numbers range from 100 to 999.
• Examples include 345, 678, and 912.

Basic Subtraction Terms:

• Minuend: The larger number from which another number is subtracted.
• Subtrahend: The number that is being subtracted.
• Difference: The result of the subtraction.

Steps for Subtracting Three-Digit Numbers:

• Align the Numbers: Write the numbers one below the other, ensuring the digits are in the correct columns (hundreds, tens, units).
• Start from the Units Column: Always begin subtraction from the rightmost column (units).
• Subtract Each Column: If the top digit is smaller than the bottom digit, you need to borrow from the next column to the left.
• Borrowing/Regrouping: If the digit in the minuend is smaller than the subtrahend, borrow 10 from the next column. Reduce the left column by one and add 10 to the current column.

Example Problems:

• Example 1: 457−123457 – 123457−123
• Subtract the units: 7−3=47 – 3 = 47−3=4
• Subtract the tens: 5−2=35 – 2 = 35−2=3
• Subtract the hundreds: 4−1=34 – 1 = 34−1=3
• Result: 334334334

Learn with an example

Let’s practice!