3+6=9
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the fact family is 3 because 3 goes into all of them
-3 -6 - -9 -6 = -6+9-6 = 3 - 6= -3
break the nine into to numbers (3 and 6 because 3+6=9) Mulitply both of these numbers by 3 3x3=9 6x3=18 Then add together the products of the two numbers 18+9=27
1x3=3x3=9
3 + 6 + 9 = 18/3 = 6 The average of the three values is therefore 6.