No. "Product" is a binary operation, which means that a product is defined for two (or more) numbers but never for just one number.
Since they are co-prime, the LCM is their product, 480.
480
12,960
To the nearest ten, 480
It could estimate to 480 or even 500, depending on what way you want to estimate it to.
The product of 6, 10 and 8 is 480.
41.5
No. A better estimate would be 380. The actual total is 379.
480 - 250 = 230
32 multiplied by 15 is 480.
As a product of its prime factors: 2*2*2*2*2*3*5 = 480
The estimate for the product of 289 and 7 is 2,000.