Grade 1 - Subtraction(0 - 9)

Subtraction to Grade 1 can be taught using the fingers or using the line to represent each number.

1.Using Fingers to subtract numbers.

Example: Add following digits
 

                                      4  
                                 -   2    
                             
                              ______

Step1:First let the student count 2 fingers as the first digit to add is 4.

Step2:Now let the student count 2 fingers in the opposite direction starting just after the counting ended for the first digit. And ask him to remember the finger where the count ended.

Step3:Now let the student count all the fingers starting from the first finger and the last finger where the counting ended for the second digit. The Total count is the answer.

Now, answer can be written for the above example.


                                      4  
                                 -   2    
                              ______
                                     2
                              ______


2.Using Small Lines to subtract numbers. 

Taking the sample example


                                       4  
                                 -    2    
                              ______
                                      2
                              ______

Step1:  Here we will marking lines for each digit depending upon the value it represents.
Here first digit is 2. Draw two lines for the first digit.
 

 Step2: Now, from right, count and cross the lines equal to the number given below.

Step3: Let the student count the total number of lines that are not crossed and that is the answer. Here it is 2.

                                      4  
                                 -   2    
                                      2
                              ______