Answer:
Step-by-step explanation:
50 elevens-1 elevens = ( 50 -1 ) elevens = 49 elevens
or 49 x eleven = 49 x 11 = _______ (use your calculator here)
( 50 -1 ) elevens = 49 elevens = 49 x 11 = 539
or
50 elevens - 1 elevens = (50 x 11) - (1 x 11)
550 - 11 = 539
