Tutorial 6
Multiplying a number by 11.

    To multiply any 2-figure number by 11 we just put
    the total of the two figures between the 2 figures.

  • 26 x 11 = 286

    Notice that the outer figures in 286 are the 26
    being multiplied.

    And the middle figure is just 2 and 6 added up.

  • So 72 x 11 = 792

  • 77 x 11 = 847

    This involves a carry figure because 7 + 7 = 14
    we get 77 x 11 = 7147 = 847.