AP Computer Science
Name____________________________________ APCS A (HW Ch1 – Hexadecimal/Octal #s)
Hexadecimal/Octal/Binary/Decimal Numbers
|Convert from hexadecimal to decimal. |Convert from decimal to hexadecimal. |
|1. BAD |4. 13 |
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|2. 2E9 |5. 27 |
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|3. ACE |6. 89 |
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|Convert from hexadecimal to binary. |Convert from binary to hexadecimal. |
|7. FF |10. 11110011 |
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|8. 2B |11. 10010101 |
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|9. BAD |12. 11010 |
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|Convert from octal to decimal. |Convert from decimal to octal. |
|13. 26 |16. 19 |
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|14. 1001 |17. 36 |
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|15. 137 |18. 71 |
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|Sample AP Exam Multiple Choice Questions |
|19. Suppose that base-2 binary numbers and base-16 (hexadecimal) |20. Base 10 (decimal) and base 16 (hexadecimal) are indicated with the|
|numbers can be denoted with subscripts, as shown below: |subscripts dec and hex respectively. For example, the decimal number |
|2Ahex=101010bin |23 can also be represented in base 16 as shown below. |
| |23dec=17hex |
|Which is equal to 3Dhex? | |
|(A) 111101bin |Which is equal to 100hex-10hex? |
|(B) 101111bin |(A) 15dec |
|(C) 10011bin |(B) 90dec |
|(D) 110100bin |(C) 144dec |
|(E) 101101bin |(D) 240dec |
| |(E) 256dec |
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