Calculate (235)8 - (66)8. Write your answer in base 8.
Explanation:
When we subtract numbers in non-decimal system, subtract them as we do in decimal system but write them according to the given base system.
Step 1: Subtracting unit’s digits.
When we subtract bigger number from a smaller number, we borrow from the left of the smaller digit.
Since we are dealing in base 8, when we borrow, we subtract 1 from the left digit and add 8 in the smaller digit.
Now subtract as we do in decimal system i.e., 8 + 5 – 6 = 7.
Step 2: Subtracting ten’s digits.
Now subtract as we do in decimal system i.e., 8 – 1 + 3 – 6 = 4.
Step 3: Subtracting hundred’s digits.
Now subtract as we do in decimal system i.e., – 1 + 2 = 1.
Hence, 147.
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