Show a graphical interpretation of three-digit decimal numbers, similar to Figure 3.11. The left-most digit is 0 for positive numbers and 9 for negative numbers. Verify the validity of your answer by trying a few examples of addition and subtraction.

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1110 1101. 1100 1011 1010 1111 4 5 -6 1001 0000 -1 +1 8 +7 1000 0001 +2 +3 +4. 0010 +5. +6 0111 0011 (a) The number circle 0110 0100 0101 1110 1101 1100 10111 1010 1111 -3 4 5 -6 1001 -1 0000 +1 -87 1000 0001 +2 +7 +3 0010 +4- +6 +5. 0111 . 0011 0100 0101 0110 Add 16-2=14 Subtract 2 (b) Subtracting 2 by adding its 2's complement