Left-to-Right Calculation: A Technique Every Class 3 Student Should Know

What Is Left to Right Calculation Technique Class 3?

The left-to-right calculation technique in Class 3 is a method where students solve numbers one step at a time from the left side of the maths expression to the right side.

Many children learn written maths by working with carrying and borrowing. However, mental maths works differently. When children read a sentence, their eyes move from left to right. The same idea can be used in maths. This method follows the natural way children read and think, making calculations easier and faster.

It is one of the most useful Class 3 mental maths methods because it helps children solve problems without feeling confused.

Benefits of the Left to Right Calculation Technique Class 3 

The main benefit of this method is that children only need to focus on one step at a time.

For example:

15 + 6 − 3

Step 1

15 + 6 = 21

Step 2

21 − 3 = 18

Instead of thinking about all the numbers together, students solve one small calculation and then move to the next. This improves mental arithmetic in Class 3 because children do not have to remember too many numbers at once.

It also helps with fast calculation in Class 3 because calculations become smoother and easier.

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How to Apply BODMAS in the Left to Right Calculation Technique Class 3 

To use the left-to-right calculation technique Class 3 correctly, children must understand the BODMAS rule.

BODMAS stands for:

• B = Brackets

• O = Orders

• D = Division

• M = Multiplication

• A = Addition

• S = Subtraction

For Class 3 students, the main focus is usually on:

• Multiplication

• Division

• Addition

• Subtraction

One important thing to remember is that multiplication and division have the same priority. Addition and subtraction also have the same priority. When two operations have equal priority, students should solve them from left to right. This rule helps children avoid mistakes and supports mental arithmetic Class 3 development.

Read More - Speed Maths Test for Class 3 (Try Now)

Why Addition Does Not Always Come Before Subtraction in the Left to Right Calculation Technique 

Many children think addition must happen first because the letter A comes before S in BODMAS.

This is not correct.

Look at this example:

20 − 8 + 4

Wrong Method

8 + 4 = 12

20 − 12 = 8

Wrong answer: 8

Correct Method

20 − 8 = 12

12 + 4 = 16

Correct answer: 16

The same rule applies to other examples.

Using the correct order improves fast calculation in Class 3 and reduces mistakes.

Read More - Learn Subtraction Without Borrowing (Class 3)

How to Use Left to Right Calculation Technique Class 3 

Teaching children a simple process makes learning easier.

Step 1: Check the Operations

Look at the maths expression. If it only has addition and subtraction, solve from left to right.

Step 2: Look at the First Two Numbers

Example:

45 + 10 − 7

Start with:

45 + 10

Step 3: Solve the First Calculation

45 + 10 = 55

Step 4: Use the New Answer

The question now becomes:

55 − 7

Step 5: Solve the Final Calculation

55 − 7 = 48

Following these simple steps helps children learn strong mental maths Class 3 methods.

How to Solve Multiplication and Addition Using the Left to Right Calculation Technique 

As children improve, they start seeing questions that include multiplication and addition. This is where mental maths shortcuts for Class 3 become helpful.

Example 1: Multiplication Comes First

4 × 5 + 6

Step 1:

4 × 5 = 20

Step 2:

20 + 6 = 26

Answer = 26

Example 2: Multiplication Is on the Right Side

6 + 4 × 7

Even though addition appears first, multiplication has higher priority.

Step 1:

4 × 7 = 28

Step 2:

6 + 28 = 34

Answer = 34

Learning these rules helps children improve mental arithmetic and solve mixed-operation questions correctly.

How Brackets Change Left to Right Calculation Technique Class 3

Brackets always have the highest priority.

Children should look for brackets before solving any other operation.

Example Without Brackets

6 + 4 × 7 − 3

Step 1:

4 × 7 = 28

Step 2:

6 + 28 = 34

Step 3:

34 − 3 = 31

Answer = 31

Example With Brackets Around Addition

(6 + 4) × 7 − 3

Step 1:

6 + 4 = 10

Step 2:

10 × 7 = 70

Step 3:

70 − 3 = 67

Answer = 67

Example With Brackets Around Subtraction

6 + 4 × (7 − 3)

Step 1:

7 − 3 = 4

Step 2:

4 × 4 = 16

Step 3:

6 + 16 = 22

Answer = 22

These examples show why children should always check brackets first.

Understanding this rule improves Class 3 mental maths methods and helps avoid errors.

Mental Maths Shortcuts for Left to Right Calculation Technique Class 3 

Simple shortcuts can help students solve problems faster. These mental maths shortcuts for Class 3 work very well with left-to-right calculations.

Mental Maths Shortcuts Class 3: Using Number Splitting

Break a number into tens and ones.

Example:

34 + 25

Step 1:

34 + 20 = 54

Step 2:

54 + 5 = 59

Answer = 59

This method is one of the easiest Class 3 maths tricks for young learners.

Mental Maths Shortcuts Class 3 Using Compensation

When a number is close to the next multiple of 10, round it first.

Example:

56 + 19

Step 1:

56 + 20 = 76

Step 2:

76 − 1 = 75

Answer = 75

This shortcut improves fast calculation Class 3 and helps children calculate quickly in their heads.

How Vedic Maths Supports the Left to Right Calculation Technique Class 3 

Many ideas used in Class 3 vedic maths focus on making calculations easier.

Methods such as:

• Number splitting

• Compensation

• Pattern recognition

• Quick multiplication techniques

can work together with the left-to-right calculation technique Class 3.

When children practice these skills regularly, they become faster and more confident. Using Class 3 vedic maths techniques alongside school maths can help improve overall speed and accuracy.

Daily Practice Activities for Left to Right Calculation Technique 

Parents can help children improve by practicing simple maths questions every day.

Some useful Class 3 maths tricks include:

• Adding numbers from left to right

• Breaking large numbers into smaller parts

• Using multiplication tables regularly

• Looking for number patterns

• Solving quick mental maths challenges

Even five to ten minutes of daily practice can improve speed and accuracy.

How CuriousJr Helps with Left to Right Calculation Technique Class 3

CuriousJr online mental maths for class 3 offers fun and interactive activities that help students learn the Class 3 left-to-right calculation technique.

The platform uses games, quizzes, and guided lessons to make learning enjoyable.

Students practice:

• Order of operations

• Number patterns

• Mental calculations

• Problem-solving skills

These activities strengthen mental maths methods, improve Class 3 mental arithmetic, and build confidence.

Because the lessons are interactive, children stay motivated and enjoy learning maths.