Mark wrote the highest score he made on his new video game as the product 70×6,000. use the associative and commutative properties to show how mark can calcuate this product mentally.

The correct answer is:

We can use the associative property to write 70 as 7*10. We can do this same process to write 6000 as 6*1000. This gives us:

(7*10)*(6*1000)

Using the commutative property, we can rearrange the factors of this problem

(7*6)*(10*1000)

7*6 is in our multiplication tables, and we know that powers of 10 allow us to just add the correct number of zeros. This means we would have 7*6=42, and have 4 zeros, for 420000.

just do 5.2 + 2 ( 7.2) and 1/3 x 3 (.9) and youv'e got your equation. 0.9( 9/10) + 7.2 ^2 = 16.4 hope i could !

step-by-step explanation:

36 girls

step-by-step explanation:

the 48 boys is 4 parts of the ratio

divide 48 by 4 to obtain one part of the ratio

= 12 ← 1 part of the ratio

3 parts = 3 × 12 = 36 ← number of girls