Subtraction Without Regrouping

Concept

Subtraction is the process of taking away a number from another. It is a primary arithmetic operation that is denoted by a subtraction symbol (-) and is the method of calculating the difference between two numbers.

Subtraction without regrouping is also known as subtraction without borrowing. It refers to the cases when the minuend is bigger than the subtrahend.

Rules

1. Place the minuend on top and subtrahend at the bottom so that the place values fall in the same columns.
2. Subtract each column together separately, starting with the one’s place.
3. The differences go below each column, underneath the line.

Example

Subtract.
75 – 21

Solution

1. Place the minuend on top and subtrahend at the bottom so that the place values fall in the same columns.

2. Subtract each column together separately, starting with the one’s place.

3. The differences go below each column, underneath the line.

75 – 21 = 54

Practice Subtraction Without Regrouping

Practice Problem 1

Subtract.
Use model.

Practice Problem 2

Subtract.

Practice Problem 3

Subtract.

Subtraction – to take away from a group or a number of things.

Minuend – the number from which we subtract

Subtrahend – the number which is subtracted.

Difference – The final result after subtracting the subtrahend from the minuend.

Regrouping is the process of making groups of tens when adding or subtracting two digit numbers (or more) and is another name for carrying and borrowing.

Pre-requisite Skills
Subtraction – Count back
Subtract Using Number Lines
Subtract Zero and All
Use doubles to subtract
Relate addition to subtraction
Missing Addend
Fact families
Subtract tens
Subtract tens and ones – Count back