REGROUING
Definition of Regrouping
Regrouping is reorganizing the formation of the group
More about Regrouping
 Regrouping is used to assist while performing addition and subtraction
Example of Regrouping

Subtract 9 from 25.
 To subtract 9 from 25, we first arrange the blocks and then divide one of the tens blocks in ten unit blocks
Video Examples: Regrouping Whole Numbers
Solved Example on Solved Example on Regrouping
Ques: Mathew collected 120 postal stamps. He gave 13 to his friend. How many stamps was he left with?
Choices:
A. 97B. 117
C. 87
D. 107
Correct Answer: D
Solution:

Step 1: Number of stamps Mathew collected = 120
Step 2: Number of stamps Mathew gave to his friend = 13
Step 3: Number of stamps left = Number of stamps collected  Number of stamps given to his friend
Step 4: Therefore, Mathew was left with 107 stamps.
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