Using the FOIL method to multiply two binomials. FOIL suggests the order, by position, in which terms should be multiplied: first, outer, inner, last.
This clip explains that there's more than one way to multiply numbers with a zero in the middle. It suggests that for those just learning multiplication, there's less chance of error if one writes out the full row of zeroes in the partial product, r...
This clip explains that the use of smaller arrays and the calculation of partial products provides the easiest way to multiply multi-digit numbers by multi-digit numbers not ending in zero.
This clip summarizes the key points in Part 3 of Multiplying Whole Numbers, whose goal is to teach students to multiply any whole numbers, however large. The key points include expanded notation, the 100 multiplication facts, arrays, and partial pro...