Square of 642

The square of a number is the product of the number itself. The square of 642 is 642 × 642. The square of a number always ends in 0, 1, 4, 5, 6, or 9. We write it in math as 642², where 642 is the base and 2 is the exponent. The square of a positive and a negative number is always positive. For example, 5² = 25; -5² = 25.

The square of 642 is 642 × 642 = 412,164.

Square of 642 in exponential form: 642²

Square of 642 in arithmetic form: 642 × 642

The square of a number is multiplying the number by itself. So let’s learn how to find the square of a number. These are the common methods used to find the square of a number.

1. By Multiplication Method
2. Using a Formula
3. Using a Calculator

In this method, we will multiply the number by itself to find the square. The product here is the square of the number. Let’s find the square of 642

Step 1: Identify the number. Here, the number is 642

Step 2: Multiplying the number by itself, we get, 642 × 642 = 412,164.

The square of 642 is 412,164.

In this method, the formula, a² is used to find the square of the number. Where a is the number.

Step 1: Understanding the equation Square of a number = a²

a² = a × a

Step 2: Identifying the number and substituting the value in the equation.

Here, ‘a’ is 642 So: 642² = 642 × 642 = 412,164

Using a calculator to find the square of a number is the easiest method. Let’s learn how to use a calculator to find the square of 642.

Step 1: Enter the number in the calculator Enter 642 in the calculator.

Step 2: Multiply the number by itself using the multiplication button (×) That is 642 × 642

Step 3: Press the equal to button to find the answer Here, the square of 642 is 412,164.

Tips and Tricks for the Square of 642

Tips and tricks make it easy for students to understand and learn the square of a number. To master the square of a number, these tips and tricks will help students.

• The square of an even number is always an even number. For example, 6² = 36

• The square of an odd number is always an odd number. For example, 5² = 25

• The last digit of the square of a number is always 0, 1, 4, 5, 6, or 9.

• If the square root of a number is a fraction or a decimal, then the number is not a perfect square. For example, √1.44 = 1.2

• The square root of a perfect square is always a whole number. For example, √144 = 12.

• Perfect square: A number that is the square of an integer. For example, 412,164 is a perfect square because it is 642².

• Exponent: The power to which a number is raised, indicating repeated multiplication. For example, in 642², 2 is the exponent.

• Square root: The number which, when multiplied by itself, gives the original number. For example, the square root of 412,164 is 642.

• Prime number: A number greater than 1 with no divisors other than 1 and itself. For example, 7 is a prime number.

• Multiplication: A mathematical operation where a number is added to itself a certain number of times. For example, 642 × 642 is a multiplication operation to find the square.