Question

name the property used in the 781×99+781=781×(99+1) (please tell me the answer very fast)​

Answer 1

Answer:

DISTRIBUTIVE PROPERTY

Step-by-step explanation:

780×99+780

=780×99+780×1

By distributive property

ab+ac=a(b+c)

780(99+1)

78000

Answer 2

Answer:

The property used in this calculation is the distributive property.

Step-by-step explanation:

On the left-hand side:

$781*99+781=77319+781\\77319+781=78100$

On the right-hand side by simplifying, we get:

$781*(99+1)=781*99+781\\781*99+781=77319+781\\77319+781=78100$

There are three properties of calculation:

• Distributive property- if parentheses contribute to the calculation
• Associative property- if elements are to be regrouped
• Commutative property- if elements are to be moved around

Since our calculation necessarily required to be solved using the help of a parentheses, thus the calculation uses the distributive property.