680 in Binary

The process of converting 680 from decimal to binary involves dividing the number 680 by 2. Here, it is divided by 2 because the binary number system uses only 2 digits (0 and 1).

The quotient becomes the dividend in the next step, and the process continues until the quotient becomes 0. This is a commonly used method to convert 680 to binary. In the last step, the remainder is noted down bottom side up, and that becomes the converted value.

For example, the remainders noted down after dividing 680 by 2 until getting 0 as the quotient is 1010101000. Remember, the remainders here have been written upside down.

In the table shown below, the first column shows the binary digits (1 and 0) as 680.

The second column represents the place values of each digit, and the third column is the value calculation, where the binary digits are multiplied by their corresponding place values.

The results of the third column can be added to cross-check if 1010101000 in binary is indeed 680 in the decimal number system.

680 can be converted easily from decimal to binary. The methods mentioned below will help us convert the number. Let’s see how it is done.

Expansion Method: Let us see the step-by-step process of converting 680 using the expansion method.

Step 1 - Figure out the place values: In the binary system, each place value is a power of 2. Therefore, in the first step, we will ascertain the powers of 2. 2^0 = 1 2^1 = 2 2^2 = 4 2^3 = 8 2^4 = 16 2^5 = 32 2^6 = 64 2^7 = 128 2^8 = 256 2^9 = 512 Since 512 is less than 680, we use it.

Step 2 - Identify the largest power of 2: In the previous step, we identified 2^9 = 512. This is because we have to identify the largest power of 2, which is less than or equal to the given number, 680. Write 1 in the 2^9 place. Now, subtract 512 from 680. 680 - 512 = 168.

Step 3 - Identify the next largest power of 2: In this step, we need to find the largest power of 2 that fits into the result of the previous step, 168. The next largest power of 2 is 2^7, which equals 128. Write 1 in the 2^7 place. Subtract 128 from 168. 168 - 128 = 40.

Step 4 - Continue the process: Continue finding the largest powers of 2 for the remainder until the remainder is 0. For 40, the largest power is 2^5 = 32. Write 1 in the 2^5 place and subtract 32 from 40. 40 - 32 = 8. Now, for 8, the largest power is 2^3 = 8. Write 1 in the 2^3 place and subtract 8 from 8. 8 - 8 = 0.

Step 5 - Identify the unused place values: In steps 2 to 4, we wrote 1 in the 2^9, 2^7, 2^5, and 2^3 places. Now, write 0s in the remaining places, which are 2^8, 2^6, 2^4, 2^2, 2^1, and 2^0. Now, by substituting the values, we get: 0 in the 2^0 place 0 in the 2^1 place 0 in the 2^2 place 1 in the 2^3 place 0 in the 2^4 place 1 in the 2^5 place 0 in the 2^6 place 1 in the 2^7 place 0 in the 2^8 place 1 in the 2^9 place

Step 6 - Write the values in reverse order: We now write the numbers upside down to represent 680 in binary. Therefore, 1010101000 is 680 in binary.

Grouping Method: In this method, we divide the number 680 by 2. Let us see the step-by-step conversion.

Step 1 - Divide the given number 680 by 2. 680 / 2 = 340. Here, 340 is the quotient and 0 is the remainder.

Step 2 - Divide the previous quotient (340) by 2. 340 / 2 = 170. Here, the quotient is 170 and the remainder is 0.

Step 3 - Repeat the previous step. 170 / 2 = 85. Now, the quotient is 85 and the remainder is 0.

Step 4 - Repeat the previous step. 85 / 2 = 42. The quotient is 42 and the remainder is 1.

Step 5 - Continue the process until the quotient is 0. 42 / 2 = 21. Quotient: 21, Remainder: 0 21 / 2 = 10. Quotient: 10, Remainder: 1 10 / 2 = 5. Quotient: 5, Remainder: 0 5 / 2 = 2. Quotient: 2, Remainder: 1 2 / 2 = 1. Quotient: 1, Remainder: 0 1 / 2 = 0. Quotient: 0, Remainder: 1

Step 6 - Write down the remainders from bottom to top. Therefore, 680 (decimal) = 1010101000 (binary).

There are certain rules to follow when converting any number to binary. Some of them are mentioned below:

Rule 1: Place Value Method

This is one of the most commonly used rules to convert any number to binary. The place value method is the same as the expansion method, where we need to find the largest power of 2. Let’s see a brief step-by-step explanation to understand the first rule. Find the largest power of 2 less than or equal to 680. Since the answer is 2^9, write 1 next to this power of 2. Subtract the value (512) from 680. So, 680 - 512 = 168. Find the largest power of 2 less than or equal to 168. The answer is 2^7. So, write 1 next to this power. Now, 168 - 128 = 40. Continue this process until the remainder is 0. Final conversion will be 1010101000.

Rule 2: Division by 2 Method

The division by 2 method is the same as the grouping method. A brief step-by-step explanation is given below for better understanding. First, 680 is divided by 2 to get 340 as the quotient and 0 as the remainder. Now, 340 is divided by 2. Here, we will get 170 as the quotient and 0 as the remainder. Dividing 170 by 2, we get 85 as the quotient and 0 as the remainder. Continue dividing the quotient by 2 until it becomes 0. Now, we write the remainders upside down to get the binary equivalent of 680, 1010101000.

Rule 3: Representation Method

This rule also involves breaking the number into powers of 2. Identify the powers of 2 and write them down in decreasing order i.e., 2^9, 2^8, 2^7, etc. Find the largest power that fits into 680. Repeat the process and allocate 1s and 0s to the suitable powers of 2. Combine the digits (0 and 1) to get the binary result.

Rule 4: Limitation Rule

The limitation of the binary system is that only 0s and 1s can be used to represent numbers. The system doesn’t use any other digits other than 0 and 1. This is a base 2 number system, where the binary places represent powers of 2. So, every digit is either a 0 or a 1. To convert 680, we use 0s for 2^8, 2^6, 2^4, 2^2, 2^1, and 2^0 and 1s for 2^9, 2^7, 2^5, and 2^3.

Learning a few tips and tricks is a great way to solve any mathematical problems easily. Let us take a look at some tips and tricks for binary numbers. Memorize to speed up conversions: We can memorize the binary forms for numbers.

Recognize the patterns: There is a peculiar pattern when converting numbers from decimal to binary. 1 → 1 1 + 1 = 2 → 10 2 + 2 = 4 → 100 4 + 4 = 8 → 1000

Even and odd rule: Whenever a number is even, its binary form will end in 0. For example, 680 is even, and its binary form is 1010101000. Here, the binary of 680 ends in 0. If the number is odd, then its binary equivalent will end in 1.

Cross-verify the answers: Once the conversion is done, we can cross-verify the answers by converting the number back to the decimal form. This will eliminate any unforeseen errors in conversion.

Practice by using tables: Writing the decimal numbers and their binary equivalents on a table will help us remember the conversions.

• Decimal: It is the base 10 number system which uses digits from 0 to 9.

• Binary: This number system uses only 0 and 1. It is also called the base 2 number system.

• Place value: Every digit has a value based on its position in a given number. For example, in 102 (base 10), 1 has occupied the hundreds place, 0 is in the tens place, and 2 is in the ones place.

• Octal: It is the number system with a base of 8. It uses digits from 0 to 7.

• Power of 2: Represents the sequence of numbers derived by raising the number 2 to the power of integers. For example, 2^3 = 8.