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Last updated on May 27th, 2025

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Cube of 841

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When a number is multiplied by itself thrice, the resultant number is called the cube of a number. Cubing is used while comparing sizes of objects or things with cubic measurements. In this topic, we shall learn about the cube of 841.

Cube of 841 for Singaporean Students
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Cube of 841

A cube number is a value obtained by raising a number to the power of 3, or by multiplying the number by itself three times. When you cube a positive number, the result is always positive. When you cube a negative number, the result is always negative. This is because a negative number multiplied by itself three times results in a negative number. The cube of 841 can be written as 841³, which is the exponential form. Or it can also be written in arithmetic form as, 841 × 841 × 841.

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How to Calculate the Value of Cube of 841

In order to check whether a number is a cube number or not, we can use the following three methods: multiplication method, a factor formula (a³), or by using a calculator. These three methods will help students to cube numbers faster and easier without feeling confused or stuck while evaluating the answers. - By Multiplication Method - Using a Formula - Using a Calculator

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By Multiplication Method

The multiplication method is a process in mathematics used to find the product of numbers by combining them through repeated addition. It is a fundamental operation that forms the basis for more complex mathematical concepts. Step 1: Write down the cube of the given number. 841³ = 841 × 841 × 841 Step 2: You get 594,823,321 as the answer. Hence, the cube of 841 is 594,823,321.

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Using a Formula (a³)

The formula (a + b)³ is a binomial formula for finding the cube of a number. The formula is expanded as a³ + 3a²b + 3ab² + b³. Step 1: Split the number 841 into two parts, such as a and b. Let a = 800 and b = 41, so a + b = 841 Step 2: Now, apply the formula (a + b)³ = a³ + 3a²b + 3ab² + b³ Step 3: Calculate each term a³ = 800³ 3a²b = 3 × 800² × 41 3ab² = 3 × 800 × 41² b³ = 41³ Step 4: Add all the terms together: (a + b)³ = a³ + 3a²b + 3ab² + b³ (800 + 41)³ = 800³ + 3 × 800² × 41 + 3 × 800 × 41² + 41³ 841³ = 512,000,000 + 78,720,000 + 40,248,000 + 68,921 841³ = 594,823,321 Step 5: Hence, the cube of 841 is 594,823,321.

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Using a Calculator

To find the cube of 841 using a calculator, input the number 841 and use the cube function (if available) or multiply 841 × 841 × 841. This operation calculates the value of 841³, resulting in 594,823,321. It’s a quick way to determine the cube without manual computation. Step 1: Ensure the calculator is functioning properly. Step 2: Press 8, 4, and 1 Step 3: If the calculator has a cube function, press it to calculate 841³. Step 4: If there is no cube function on the calculator, simply multiply 841 three times manually. Step 5: The calculator will display 594,823,321.

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Tips and Tricks for the Cube of 841

The cube of any even number is always even, while the cube of any odd number is always odd. The product of two or more perfect cube numbers is always a perfect cube. A perfect cube can always be expressed as the product of three identical groups of equal prime factors.

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Common Mistakes to Avoid When Calculating the Cube of 841

There are some typical errors that students might make during the process of cubing a number. Let us take a look at five of the major mistakes that students might make:

Mistake 1

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Incorrect Multiplication

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Students might multiply the numbers only twice, that is, 841 × 841 and not 841 × 841 × 841. Always remember that 841³ = 841 × 841 × 841.

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Solved Examples on Cube of 841

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Problem 1

What is the cube and cube root of 841?

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The cube of 841 is 594,823,321, and the cube root of 841 is approximately 9.428.

Explanation

First, let’s find the cube of 841. We know that the cube of a number is x³ = y, where x is the given number and y is the cubed value of that number. So, we get 841³ = 594,823,321. Next, we must find the cube root of 841. The cube root of a number ‘x’ is such that ∛x = y, where ‘x’ is the given number and y is the cube root value of the number. So, we get ∛841 ≈ 9.428. Hence the cube of 841 is 594,823,321, and the cube root of 841 is approximately 9.428.

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Problem 2

If the side length of a cube is 841 cm, what is the volume?

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The volume is 594,823,321 cm³.

Explanation

Use the volume formula for a cube V = Side³. Substitute 841 for the side length: V = 841³ = 594,823,321 cm³.

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Problem 3

How much larger is 841³ than 800³?

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841³ – 800³ = 82,823,321.

Explanation

First, find the cube of 841, which is 594,823,321. Next, find the cube of 800, which is 512,000,000. Now, find the difference between them using the subtraction method. 594,823,321 – 512,000,000 = 82,823,321. Therefore, 841³ is 82,823,321 larger than 800³.

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Problem 4

If a cube with a side length of 841 cm is compared to a cube with a side length of 41 cm, how much larger is the volume of the larger cube?

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The volume of the cube with a side length of 841 cm is 594,823,321 cm³.

Explanation

To find its volume, we multiply the side length by itself three times (since it’s a 3-dimensional object). Cubing 841 means multiplying 841 by itself three times: 841 × 841 = 707,281, and 707,281 × 841 = 594,823,321. The unit of volume is cubic centimeters (cm³) because we are calculating the space inside the cube. Therefore, the volume of the cube is 594,823,321 cm³.

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Problem 5

Estimate the cube of 840 using the cube of 841.

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The cube of 840 is approximately 594,823,321.

Explanation

First, identify the cube of 841, The cube of 841 is 841³ = 594,823,321. Since 840 is only a tiny bit less than 841, the cube of 840 will be almost the same as the cube of 841. The cube of 840 is approximately 594,823,321 because the difference between 840 and 841 is very small. So, we can approximate the value as 594,823,321.

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FAQs on Cube of 841

1.What are the perfect cubes up to 841?

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2.How do you calculate 841³?

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3.What is the meaning of 841³?

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4.What is the cube root of 841?

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5.Is 841 a perfect cube?

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6.How does learning Algebra help students in Singapore make better decisions in daily life?

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7.How can cultural or local activities in Singapore support learning Algebra topics such as Cube of 841?

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8.How do technology and digital tools in Singapore support learning Algebra and Cube of 841?

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9.Does learning Algebra support future career opportunities for students in Singapore?

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Important Glossaries for Cube of 841

- Binomial Formula: It is an algebraic expression used to expand the powers of a number, written as (a + b)ⁿ, where ‘n’ is a positive integer raised to the base. The formula is used to find the square and cube of a number. - Cube of a Number: Multiplying a number by itself three times is called the cube of a number. - Exponential Form: It is a way of expressing numbers using a base and an exponent (or power), where the exponent value indicates how many times the base is multiplied by itself. For example, 2³ represents 2 × 2 × 2, equal to 8. - Perfect Cube: A number that can be expressed as the cube of an integer. - Volume of a Cube: The amount of space enclosed within a cube, calculated as the cube of its side length.

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About BrightChamps in Singapore

At BrightChamps, algebra is more than just digits—it opens doors to countless possibilities! We are passionate about supporting kids all across Singapore in mastering vital math skills, like today’s focus on the Cube of 841, with a special focus on cubes—in a lively, easy-to-understand, and enjoyable way. Whether your child is figuring out how fast a roller coaster moves at Universal Studios Singapore, tracking scores at local football matches, or managing their allowance for the newest gadgets, mastering algebra builds their confidence in everyday life. Our interactive lessons make math fun and approachable. Since kids in Singapore learn differently, we customize our teaching to suit each learner’s style. From the city’s bustling streets to its beautiful gardens, BrightChamps brings algebra to life, making it exciting and meaningful across Singapore. Let’s make cubes a fun part of every child’s math journey!
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Jaskaran Singh Saluja

About the Author

Jaskaran Singh Saluja is a math wizard with nearly three years of experience as a math teacher. His expertise is in algebra, so he can make algebra classes interesting by turning tricky equations into simple puzzles.

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Fun Fact

: He loves to play the quiz with kids through algebra to make kids love it.

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