Page 38 - ComputerScience_Class_11

Example 1: 345 × 67 8
8
Answer:
Step by step explanation: First multiply 345 × 7

345 × 7 8
8
7 × 5 = 35
10
35 = 43 3 comes down 4 is carry
10
8
4 × 7 = 28 + 4
10
10
32 = 40 0 comes down 4 is carry
10
8
3 × 7 = 21 + 4
10
10
25 = 31 1 comes down 3 is carry
8
10
Result : 3103 8
The same process is followed for 345 × 6
3 4 5
x 6 7
+2 +3 +4
5 4 3
+2 +3 +3
+ 2 0 6 x
3 0 4 6 3

30463 8

Example 2: 123 x 427 8
8
Answer: 1 2 3
x 4 2 7
+1 +2
7 6 5
2 4 6 x
+1 +1
+ 4 0 4 x x
55165 8 5 5 1 6 5

Example 3: 5126 x 74 8
8
Answer: 5 1 2 6
4
7
x
+2 +1 +3
4 4 0 0
+4 +1 +5
+ 3 7 6 2 x
466050 8 4 6 6 0 5 0

1.5 HEXADECIMAL ARITHMETIC
Like other number systems, the arithmetic of hexadecimal numbers involves hexadecimal addition, hexadecimal
subtraction, hexadecimal multiplication and hexadecimal division. Hexadecimal arithmetic operations start from the
rightmost least significant bit.

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