Respuesta :

13 x 46 = 
(10 + 3) x (40 + 6) =                                      [separate the numbers into addition]
(10 x 40) + (10 x 6) + (3 x 40) + (3 x 6) =    [multiply to each number]
(400) + (60) + (120) + (18) =                       [add all end results together]

  400
    60
  120
+  18
 598

598 is your answer.