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→Method 3: Octal to Binary / Binary to Octal
# One octal number represents 3 binary numbers, so starting from right-side, group binary digits into groups of 3 (add leading zeros if necessary).
# Write (4)(2)(1) under <u>each</u> group of 3 binary numbers.
# Multiply the placeholders (i.e. 0's and 1's) by the corresponding (4)(2)(1) for each group to obtain the octal number (refer to diagram of ''binary to octal'' conversion).<br><br>
''Octal to Binary''
# One octal number represents 3 binary numbers, so starting from rightspace-side, group out the octal numbers to make space for a binary digits into groups of 3 (add leading zeros if necessary)number.# Write (4)(2)(1) under <u>each</u> group of 3 binary numbersoctal number.# Multiply the placeholders (i.e. Write 0's and or 1's) by the corresponding (4)(2)(1) for each group of binary numbers to add up to obtain the corresponding octal number (refer to diagram of ''octal to binary to octal'' conversion).<br><br>
==== Method 4: Hexadecimal to Binary / Binary to Hexadecimal ====
