87 Decimal in Binary

Let's convert the decimal number 87 to binary without using a calculator:

Start by dividing 87 by 2:

87 ÷ 2 = 43 (Quotient) with a remainder of 1

Now, divide the quotient (43) by 2:

43 ÷ 2 = 21 (Quotient) with a remainder of 1

Now, divide the quotient (21) by 2:

21 ÷ 2 = 10 (Quotient) with a remainder of 1

Now, divide the quotient (10) by 2:

10 ÷ 2 = 5 (Quotient) with a remainder of 0

Now, divide the quotient (5) by 2:

5 ÷ 2 = 2 (Quotient) with a remainder of 1

Now, divide the quotient (2) by 2:

2 ÷ 2 = 1 (Quotient) with a remainder of 0

The Quotient is less than 2 (1), so we will transfer it to the beginning of the number as a reminder.

Now, write down the remainders obtained in reverse order:

1010111