Subtracting 2-Digit Numbers

In subtracting 2-digit numbers we will subtract or minus a two-digit number from another two-digit number. To find the difference between the two numbers we need to ‘ones from ones’ and ‘tens from tens’.

How to subtract two digit numbers?

The steps of the examples on subtracting 2-digit numbers i.e. ‘ones from ones’ and ‘tens from tens’:

1. Subtract 41 from 63.

(i) First arrange the numbers vertically so that the tens' place digits and ones' place digits are lined up which means in simple one number should be written above the other number. Draw a line under the bottom number.

Subtract Two Digit Numbers




(ii) Subtract the digits in the ones place. Subtract (3 - 1 = 2). Place 2 in the ones column as shown.

Subtract Two Digit Numbers





(iii) Subtract the digits in the tens' place. Subtract (6 - 4 = 2). Place 2 in the tens column as shown.

Subtract Two Digit Numbers





(iv) The difference of 63 – 41 is 22


2. Subtract 52 from 86.

(i) First arrange the numbers vertically so that the tens' place digits and ones' place digits are lined up which means in simple one number should be written above the other number. Draw a line under the bottom number.

Subtract Two Digit Numbers




(ii) Subtract the digits in the ones place. Subtract (6 - 2 = 4). Place 4 in the ones column as shown.

Subtract Two Digit Numbers





(iii) Subtract the digits in the tens' place. Subtract (8 - 5 = 3). Place 3 in the tens column as shown.

Subtract Two Digit Numbers





(iv) The difference of 86 - 52 is 34


3. Subtract 42 from 78

Solution:

(i) Given numbers are written in column form. The greater number is written first, then the smaller number is written.

(ii) First, the digits of one’s place are taken. 2 is subtracted from 8.         T         O

8 ones – 2 ones = 6 ones. This 6 is written in one’s column.                    7         8

(iii) Now digits of tens place are written 4 is subtracted from 7.         -     4         2

7 tens – 4 tens = 3 tens. This 3 is written in tens column.                      3         6

Hence, 78 – 42 = 36

 

In subtraction there are three numbers as:

     95     the number from which smaller number is subtracted is called minuend

  - 23      the number to be subtracted is called the subtrahend.

    72       the number which is the subtracted result is called the difference.

Here, in subtracting 2-digit numbers we get 95 is minuend, 23 is subtrahend and 72 is difference.

Minuend is always greater than subtrahend.


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