T.L.E
Directions: Solve for the decimal equivalent of the following:
1. 89*8
2.75*8
3.64*8
4. 79*8
5. 54*8
octal to decimal
Answer (1)
Convert Octal to Decimal1. 89₈ Invalid – octal numbers use digits 0–7 only. 89 is not a valid octal.2. 82.75₈ Split: 82 = 8×8 + 2 = 64 + 2 = 66 .75 = (7×8⁻¹) + (5×8⁻²) = 0.875 + 0.078125 = 0.953125 Total = 66.9531253. 83.64₈ 83 = 8×8 + 3 = 64 + 3 = 67 .64 = (6×8⁻¹) + (4×8⁻²) = 0.75 + 0.0625 = 0.8125 Total = 67.81254. 79₈ Invalid – digit 9 is not valid in octal.5. 54₈ 5×8 + 4 = 44
