12.- Calcula: a) 102 = 100 b) 105 = c) 6· 104 = d) 106 = e) 32· 107 = f) 1010 = g) 15· 1011 = i) 1012 =

a) 102 = 100

102 = (10)2 = 10 * 10 = 100

b) 105 = 10000

105 = (10)5 = 10 * 10 * 10 * 10 * 10 = 10000

c) 6· 104 = 6000

6· 104 = 6 * (10)4 = 6 * 10 * 10 * 10 * 10 = 6000

d) 106 = 1000000

106 = (10)6 = 10 * 10 * 10 * 10 * 10 * 10 = 1000000

e) 32· 107 = 32000000

32· 107 = 32 * (10)7 = 32 * 10 * 10 * 10 * 10 * 10 * 10 = 32000000

f) 1010 = 1000000000

1010 = (10)10 = 10 * 10 * 10 * 10 * 10 * 10 * 10 * 10 * 10 * 10 = 1000000000

g) 15· 1011 = 15000000000

15· 1011 = 15 * (10)11 = 15 * 10 * 10 * 10 * 10 * 10 * 10 * 10 * 10 = 15000000000

i) 1012 = 100000000000

1012 = (10)12 = 10 * 10 * 10 * 10 * 10 * 10 * 10 * 10 * 10 * 10 * 10 = 100000000000