Tutoring math, you often get asked about sets of numbers.  Let’s sort out what belongs where. We’ll make this story as short as possible: Naturals (N):  {1,2,3,4…..}  These might be referred to as counting numbers. Wholes (W):  {0,1,2,3,4…..}  These include all the naturals, plus zero. Integers (Z):  {….-3,-2,-1,0,1,2,3….}  …

Number Sets: Naturals, Wholes, Integers, etc Read more »

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Tutoring math, the FOIL method is used daily.  We’ll explain it here. In math, the distributive property is used constantly.  An illustration: 3(5x-7)=15x-21 To see what’s really happening here, look to the following: We see that we take the outer number (in this case, …

Multiplying two binomials: the FOIL method Read more »

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