Square of 420

The square of a number is the product of the number itself. The square of 420 is 420 × 420. The square of a number always ends in 0, 1, 4, 5, 6, or 9. We write it in math as 420², where 420 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 420 is 420 × 420 = 176400.

Square of 420 in exponential form: 420²

Square of 420 in arithmetic form: 420 × 420

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 420.

Step 1: Identify the number. Here, the number is 420.

Step 2: Multiplying the number by itself, we get, 420 × 420 = 176400.

The square of 420 is 176400.

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 420.

So: 420² = 420 × 420 = 176400

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 420.

Step 1: Enter the number in the calculator Enter 420 in the calculator.

Step 2: Multiply the number by itself using the multiplication button (×) That is 420 × 420

Step 3: Press the equal to button to find the answer Here, the square of 420 is 176400.

Tips and Tricks for the Square of 420: 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 perfect square is a number that can be expressed as the product of an integer with itself. For example, 16 is a perfect square because 4 × 4 = 16.

• Prime number: A prime number is a natural number greater than 1 that has no divisors other than 1 and itself.

• Square: The square of a number is the result of multiplying the number by itself. For example, the square of 5 is 25.

• Exponent: An exponent refers to the number that indicates how many times a base is multiplied by itself. For example, in 2³, 3 is the exponent.

• Calculator: A calculator is a device used to perform calculations, ranging from basic arithmetic to complex mathematics.