Square of 491

The square of a number is the product of the number itself.

The square of 491 is 491 × 491.

The square of a number always ends in 0, 1, 4, 5, 6, or 9.

We write it in math as (491²), where 491 is the base and 2 is the exponent.

The square of a positive and a negative number is always positive. For example, (5² = 25); ((-5)² = 25).

The square of 491 is 491 × 491 = 241081.

Square of 491 in exponential form: (491²)

Square of 491 in arithmetic form: 491 × 491

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.

• By Multiplication Method
   
• Using a Formula (a²)
   
• 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 491.

Step 1: Identify the number. Here, the number is 491.

Step 2: Multiplying the number by itself, we get, 491 × 491 = 241081.

The square of 491 is 241081.

In this method, the formula, \(a^2\) 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 491.

So: (491² = 491 × 491 = 241081)

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 491.

Step 1: Enter the number in the calculator. Enter 491 in the calculator.

Step 2: Multiply the number by itself using the multiplication button (×). That is 491 × 491.

Step 3: Press the equal to button to find the answer. Here, the square of 491 is 241081.

Tips and Tricks for the Square of 491

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, (sqrt{1.44} = 1.2).

• The square root of a perfect square is always a whole number. For example, (sqrt{144} = 12).

• Prime number: Any number that is only divisible by 1 and the number itself is a prime number. For example, 2, 3, 5, 7, 491, …

• Exponential form: Exponential form is the way of writing a number in the form of a power. For example, (9²) where 9 is the base and 2 is the power.

• Square root: The square root is the inverse operation of the square. The square root of a number is a number whose square is the number itself.

• Perfect square: A number that is the square of an integer. For example, 16 is a perfect square because (4² = 16).

• Area: The amount of space inside the boundary of a flat (2-dimensional) object such as a triangle or circle.