a, 2.2.4.4 = 2 . 2 . 2 2 . 2 2 = 2 1 + 1 + 2 + 2 = 2 6
b, 10.1000.100000 = 10 . 10 3 . 10 5 = 10 1 + 3 + 5 = 10 9
c, 4 5 . 2 7 = 2 2 . 2 7 = 2 2 . 5 . 2 7 = 2 10 . 2 7 = 2 10 + 7 = 2 7
d, 3 3 . 18 - 3 3 . 15 = 3 3 ( 18 - 15 ) = 3 3 . 3 = 3 3 + 1 = 3 4
e, 6 3 . 36 = 6 3 . 6 2 = 6 3 + 2 = 6 5
f, 49 3 . 7 4 = 7 2 3 . 7 4 = 7 2 . 3 . 7 4 = 7 6 . 7 4 = 7 6 + 4 = 7 10
g, a 9 . a 7 = a 9 + 7 = a 16
h, a . b 6 . b 6 = a 6 . b 6 . b 6 = a 6 . b 6 . b 6 = a 6 . b 6 + 6 = a 6 . b 12