Question

Mark wrote the highest score he made on his new video game as the product of 70 X 6000. Use the Associative and Commutative Properties to show how Mark can calculate this product mentally.

Answer 1

I think in commutative properties of multiplication:
70 x 6000 = 70 x 6000
420,000   =  420,000

I don't know associative properties, only commutative properties. Sorry :(

Answer 2

Answer:

Mark wrote the highest score he made on his new video game as the product of 70 x 6000.

Associative property:

$70\times6000$

$(7\times6)\times(10\times1000)$

=> $(42)\times(10000)$

= 420000

Commutative property:

$(7\times10)\times (6\times10\times10\times10)$  

= $7\times6\times10\times10\times10\times10$

= $42\times10\times10\times10\times10$  

= 420000