Fact families are 3 numbers that are in the form of 2 addition and subtration problems or 2 multiplication and division problems.
Fact families are 3 numbers that are related, just as the people in a family are related. They make a set of related math facts.
a fact family is a group of numbers that use the same numbers to make a addition,subtraction,divison or a multiplacation sentence or equation
The first percussion instruments were likely human hands and feet used to clap or stomp a rhythm. Eventually culture discovered that they could create louder, more varied sounds with crafted surfaces...
Why do some fact families have only two facts? Give an example
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