Question

Find the product of 20x9x5. Tell which property is used.

Answer 1

The answer is 900 because 20×9=180 and just multiply 180×5 and that equals 900.

Answer 2

The property used is Commutative property.

Explanation:

To find : The product of
`20* 9* 5`. Tell which property is used.

Solution :

Product of
`20* 9* 5`

Applying Commutative property to make calculation easier,

i.e.
`a* b=b* a`

Rearrange the terms,

`20* 9* 5=(20* 5)* 9`

Multiply first bracket,

`20* 9* 5=100* 9`

Multiply,

`20* 9* 5=900`

Therefore, The property used is Commutative property.