The product a⋅b (or a×b) can be read as the sum of b equal addends, each equal to a, when b>0 — or as “a groups of b objects” (the same number; swapping the order of the factors in a concrete model only changes how you look at the picture).
The numbers a and b are called factors; the result is the product.
Commutative property: a⋅b=b⋅a.
Associative property: (a⋅b)⋅c=a⋅(b⋅c).
One: a⋅1=1⋅a=a.
Zero: a⋅0=0⋅a=0.
A product is linked to a sum of equal addends
a⋅b=b⋅a — order of factors
(ab)c=a(bc) — parentheses with three factors
a⋅1=a, a⋅0=0
The same product — two ways to group
Content is available with subscription.
Get full access to all courses on the platform for one year with a single payment.
▼
Unlike other platforms that charge per course, here you get everything for one price, and after one year of use there will be no automatic charge for the following year.