Estimate the product of 78×21, choose a method

1638

Step-by-step explanation:

The best way, and the most used way is long multiplication. What you do is multiply parts of you number(like 78x1, and 78x20) and then add them together, not sure if it helps but here are some examples

Thats where they was ported and the fields that noone really knew much about needed tended, so they put slaves out there do free work and huge profits and so on the north decided to hold its own and was more different way of survival did not have same climate conditions to afford protecting slaves from winter so expenses be diff from south