Teaching subtraction is an integral part of early math education. Sometimes, when subtracting, borrowing or regrouping is required from the next place value to make the subtraction possible.
This method of subtraction is used along with the column method of subtraction. (When numbers to be used for subtraction are arranged in columns according to place value).
Regrouping or borrowing more is used more often when one number is taken away from the corresponding place value. When a bigger number is at the bottom and subtracted from a smaller number at the top, in a particular column. Regrouping from the next place value column is done.
For example : Subtract 24 from 8, where regrouping is required. As 8 is a bigger number than 4, it cannot be subtracted from 4. Regrouping involves carrying over the extra value to the next column.
Subtraction with regrouping can be connected to real-life scenarios where it is used, such as calculating change when shopping or solving word problems involving subtraction. This proves the fact that knowledge of subtraction is vital in everyday life.
Before teaching subtraction with borrowing, kids should have good knowledge of place value, focusing on the ones, tens, and hundreds. As when subtracting, the digits in each place value column need to be subtracted separately, starting from the rightmost column (ones) and moving leftward.
Kids should be taught simple subtraction without borrowing. When kids are well versed in subtraction without regrouping, this complex topic should be explained.
Regrouping or borrowing method :
This method of subtraction is used along with the column method of subtraction. (When numbers to be used for subtraction are arranged in columns according to place value).
When a bigger number needs to be subtracted from a smaller number in any of the columns during subtraction, then a method of regrouping is used.
In the method of regrouping or borrowing, a number is borrowed from the next column on the left side.
For example :
Similarly, the degree of complexity increases as per the age and grade level of the child. The following example shows borrowing in 5-digit numbers.
The pace and difficulty level of the problems should be adjusted according to the kids’ needs. Some children may require additional practice or visual aids, while others may grasp the concept quickly.
Teaching subtraction with regrouping with kid-friendly, clear, and easy-to-understand posters :
Ignite kids’ curiosity with engaging stories for role play and skits, making the learning of this concept an exciting and effective experience. Teaching subtraction with regrouping through stories from Uncle Math School by Fun2do Labs :
Teaching subtraction with regrouping by activities :
Learning subtraction can be made enjoyable by incorporating interactive games and activities.
Pretend shopping :
Kids love to handle money! In this activity, kids can be given fake money in whole numbers to shop for toys and stickers.
The price of toys can be set intensely, which requires regrouping to find the difference.
Let the kids enjoy learning subtraction while shopping.
Help your kids practise subtraction by regrouping with interesting and engaging fun worksheets and solutions from Uncle Math by Fun2do Labs.
