How to convert decimal number to binary number or convert base 10 into base 2 number?

The video begins by stating its purpose: converting numbers from the decimal system (base 10) to the binary system (base 2). This is a reversal of previous videos where base 2 was converted to base 10.

The first example demonstrates converting the number 99. The method involves repeatedly dividing the number by 2 and recording the remainder (either 0 or 1). This process continues until the quotient reaches 1. For 99, the sequence of remainders from bottom to top forms the binary number.

The second example illustrates converting the number 152. The same division and remainder recording process is applied. The video shows step-by-step how to divide by 2, identifying whether there is a remainder of 0 or 1, and continuing until the quotient is 1. Reading the remainders upwards provides the binary equivalent.

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