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Day 7 Name: _______________________ Binary Addition (and other bases) 1. 00101110 + 01110011 ----------------- 01101101 + 00110111 ---------------- 00001111 + 10101010 ---------------- 2. Convert the following base 10 addition into binary, then perform the addition, and then convert back to base 10 to check your answer. 53 + 47 ------ 103 + 69 ------- 63 + 77 ------- 3. Repeat the above addition exercises from #2, except this time, convert to base 5 instead of binary. 4. 10101011 - 01110001 ----------------- 01111101 - 00110111 ---------------- 10001111 - 00101010 ---------------- 5. Using a shift cipher of n ≥ 3, write a message with at least 20 letters and then encode it using your own cipher. Write this new coded message on a separate scrap of paper. old new A B C D E F G H I J K L M N O P Q R S T U V W X Y Z