Addition of Two 4-Digit Numbers

1. Revision: Place Value

A 4-digit number has:

Example: 3,452

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2. Understand the Question

Let us add:

2,345 + 4,678

We will add from Ones → Tens → Hundreds → Thousands

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3. Abacus Setup

Use 4 rods in the abacus:

Thousands Hundreds Tens Ones

First, show 2,345 on the abacus.

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4. Step-by-Step Addition

Step 1: Ones

5 + 8 = 13
Write 3, carry 1 to Tens

Step 2: Tens

4 + 7 + 1 (carry) = 12
Write 2, carry 1 to Hundreds

Step 3: Hundreds

3 + 6 + 1 = 10
Write 0, carry 1 to Thousands

Step 4: Thousands

2 + 4 + 1 = 7

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5. Final Answer

2,345 + 4,678 = 7,023

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6. Abacus Carry Concept

On the abacus:

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7. Try Yourself

Try adding these numbers on the abacus:

Practice Now