1) What is binary? a) Base 2. Binary uses numbers 0 and 1. b) Base 16. Binary uses numbers 0 to 15. c) Base 10. Binary uses numbers 0 to 9. d) Base 2. Binary uses numbers 0 and 2. 2) Why do our computers use binary? a) because computers use switches and electricity b) to make it easier for humans to work with them c) binary is better for calculations that denary d) because computers find it easier 3) 1001 in denary a) 12 b) 11 c) 7 d) 8 e) 9 4) 11001 into denary a) 23 b) 25 c) 17 d) 21 e) 22 5) 45 into binary a) 101101 b) 101011 c) 101111 d) 111101 6) 1111 in denary a) 20 b) 12 c) 15 d) 18 7) 28 in binary a) 11111 b) 11100 c) 11000 d) 11101 8) 100 in binary a) 1110100 b) 0100100 c) 1100111 d) 1100100 9) 255 in binary a) 10101010 b) 11111100 c) 11111101 d) 11111110 e) 11111111 10) 111101 in denary a) 63 b) 62 c) 61 d) 60

Year 8 Binary Conversion (Exit Ticket)

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