11001(2) + 10(2) = ???(2) = ???(10) 10101(2) - 10(2) = ???(2) = ???(10) 11101(2) * 10(2) = ???(2) = ???(10)
11001(2) + 10(2) = 11011(2) = 27(10) 10101(2) - 10(2) = 10011(2) = 19(10) 11101(2) * 10(2) = 111010(2) = 58(10)