Tamil Nadu Board of Secondary EducationSSLC (English Medium) (5 to 8) Class 6

# Properties of Whole Numbers - Identity of Addition and Multiplication of Whole Numbers

## Notes

### Identity of addition and multiplication:

Identity means that whatever the number or value may be, the answer stays the same in mathematical operations like addition and multiplication.

• Additive identity means that we get the same whole number when added to another whole number.
• Zero is called an identity for the addition of whole numbers or additive identity for whole numbers i.e., a + 0 = a, (a is any whole number).
• Example, 0 + 15 = 15

#### 2. Multiplicative Identity:

• Multiplicative identity means that we get the same whole number when multiplied by another whole number.
• Zero has a special role in multiplication too. Any number, when multiplied by zero, becomes zero. Example, 5 × 0 = 0
• 1 is the identity for multiplication of whole numbers or multiplicative identity for whole numbers.
• Example, 1 × 100 = 100.
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Additive Identity & Multiplicative Identity [00:05:28]
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