Converting FROM Decimal always have the division and whenever the remainder is not 0 make the answer with decimal and multiply the decimal to the base of where you're converting it.
Converting TO Decimal always require multiplying the digit of FROM to the base of FROM and then add the product of it and then that's the final answer.
Octal to Hexadecimal - Get the 3 equivalent binarydigit per octaldigit and then group it to 4 to get the answer.
Hexadecimal to Octal - Get the 4 equivalent binarydigit per hexadecimaldigit and then group it to 3 to get the answer,
Binary to Octal - Group to 3
Octal to Binary - Get the 3 equivalent binarydigit per octaldigit.
Binary to Hexadecimal - Group to 4
Hexadecimal to Binary - Get the 4 equivalent binarydigit per hexadecimaldigit
Binary addition rule:
1+0=1
0+1=1
0+0=0
1+1=0 carry 1
Binary to subtraction rule:
1-0=1
1-1=0
0-0=0
0-1= borrow 1 then zero become 2
Binary multiplication rule:
1x1=1
1x0=0
0x1=0
0x0=0
Binary division technique: convert the divisor and dividend first and then do the normal division so that you have foundation and then after you see the answer, do the binary division.
Binary division first step: check how many digits the divisor and then get that number of digit also in the dividend and then divide it normally until the end.
In adding, subtracting, multiplying and dividing the binary for example if it is in PEMDAS equation form always keep in mind to just use the adding, subtracting, multiplying and dividingRULE only and not the normal addition, subtraction, multiplication, and division rule.