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Name____________________________________ APCS A (HW Ch1 – Hexadecimal/Octal #s) Hexadecimal/Octal/Binary/Decimal Numbers Convert from hexadecimal to decimal. Convert from octal to hexadecimal. 1. BAD 4. 13 2. 2E9 5. 27 3. ACE 6. 324 Convert from hexadecimal to binary. Convert from binary to hexadecimal. 7. FF 10. 11110011 8. 2B 11. 10010101 9. BAD 12. 11010 Convert from octal to decimal. Convert from hexadecimal to octal. 13. 26 16. 3F 14. 1001 17. 89A 15. 137 18. 71 Sample AP Exam Multiple Choice Questions 19. Suppose that base-2 binary numbers and base-16 (hexadecimal) numbers can be 20. Base 10 (decimal) and base 16 (hexadecimal) are indicated with the subscripts dec and hex

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AP Computer Science

Name____________________________________APCS A (HW Ch1 – Hexadecimal/Octal #s)

Hexadecimal/Octal/Binary/Decimal Numbers

Convert from hexadecimal to decimal.

Convert from octal to hexadecimal.

1. BAD

4. 13

2. 2E9

5. 27

3. ACE

6. 324

Convert from hexadecimal to binary.

Convert from binary to hexadecimal.

7. FF

10. 11110011

8. 2B

11. 10010101

9. BAD

12. 11010

Convert from octal to decimal.

Convert from hexadecimal to octal.

13. 26

16. 3F

14. 1001

17. 89A

15. 137

18. 71

Sample AP Exam Multiple Choice Questions

19.Suppose that base-2 binary numbers and base-16 (hexadecimal) numbers can be denoted with subscripts, as shown below: 2Ahex=101010bin

Which is equal to 3Dhex?

(A)111101bin

(B)101111bin

(C)10011bin

(D)110100bin

(E)101101bin

20.Base 10 (decimal) and base 16 (hexadecimal) are indicated with the subscripts dec and hex respectively. For example, the decimal number 23 can also be represented in base 16 as shown below.

23dec=17hex

Which is equal to 100hex-10hex?

(A)15dec

(B)90dec

(C)144dec

(D)240dec

(E)256dec

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