Tuesday, 16 July 2013

Maths Concept: Addition with regrouping

These following steps are taught to the pupils.  Please help to reinforce.

        1  4
     + 1  7

Step 1) Add the ones.  4 + 7


        1  4
     + 1  7

 
                         4 + 7 = 11
                                  = 1 ten 1 one

Step 2) Put "1" under "7"


        1  4
     + 1  7
            1

Step 3)  Put a "1" above the top "1"
 
       1
        1  4
     + 1  7
            1

Step 4) Add the tens.    (1 + 1 + 1)

        1 + 1 + 1 = 3
       1
        1  4
     + 1  7
            1

Step 5) Place "3" under the bottom "1"

       1
        1  4
     + 1  7
        3   1


Please emphasize step 2 and step 3.
Watch where the digits are written.


No comments:

Post a Comment