By the time the first white settlers arrived, Native Americans knew how to grow almost 100 different kinds of crops. These were used as medicines and dyes, as well as food. In addition to gathering and farming, most Native Americans hunted for meat. In the 1500s, the Spanish brought horses to America.
more ... The operation that reverses the effect of another operation. Example: Addition and subtraction are inverse operations. Start with 7, then add 3 we get 10, now subtract 3 and we get back to 7. Another Example: Multiplication and division are inverse operations. Start with 6, multiply by 2 we get 12, now divide by 2 and we get back to 6.
Inverse Operations. are two operations that have the opposite effect, such as addition and subtraction, or multiplication and division. For Inverse Operations we can form Fact Families. In the Fact Family of (2, 3, and 5) we can form two addition and two subtraction problems.