Last updated on May 27th, 2025
When a number is multiplied by itself thrice, the resultant number is called the cube of a number. Cubing is used when comparing sizes of objects or things with cubic measurements. In this topic, we shall learn about cubes of 985.
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 by itself three times results in a negative number. The cube of 985 can be written as 985³, which is the exponential form. Or it can also be written in arithmetic form as, 985 × 985 × 985.
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 kids to cube the numbers faster and easier without feeling confused or stuck while evaluating the answers. By Multiplication Method Using a Formula Using a Calculator
The multiplication method is a process in mathematics used to find the product of two numbers or quantities 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. 985³ = 985 × 985 × 985 Step 2: You get 954,084,625 as the answer. Hence, the cube of 985 is 954,084,625.
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 985 into two parts, as 900 and 85. Let a = 900 and b = 85, so a + b = 985 Step 2: Now, apply the formula (a + b)³ = a³ + 3a²b + 3ab² + b³ Step 3: Calculate each term a³ = 900³ 3a²b = 3 × 900² × 85 3ab² = 3 × 900 × 85² b³ = 85³ Step 4: Add all the terms together: (a + b)³ = a³ + 3a²b + 3ab² + b³ (900 + 85)³ = 900³ + 3 × 900² × 85 + 3 × 900 × 85² + 85³ 985³ = 729,000,000 + 205,425,000 + 194,062,500 + 614,125 985³ = 954,084,625 Step 5: Hence, the cube of 985 is 954,084,625.
To find the cube of 985 using a calculator, input the number 985 and use the cube function (if available) or multiply 985 × 985 × 985. This operation calculates the value of 985³, resulting in 954,084,625. It’s a quick way to determine the cube without manual computation. Step 1: Ensure the calculator is functioning properly. Step 2: Press 9 followed by 8 and 5 Step 3: If the calculator has a cube function, press it to calculate 985³. Step 4: If there is no cube function on the calculator, simply multiply 985 three times manually. Step 5: The calculator will display 954,084,625.
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.
There are some typical errors that kids might make during the process of cubing a number. Let us take a look at five of the major mistakes that kids might make:
What is the cube and cube root of 985?
The cube of 985 is 954,084,625 and the cube root of 985 is approximately 9.950.
First, let’s find the cube of 985. We know that the cube of a number, such that x³ = y Where x is the given number, and y is the cubed value of that number So, we get 985³ = 954,084,625 Next, we must find the cube root of 985 We know that the cube root of a number ‘x’, such that ∛x = y Where ‘x’ is the given number, and y is the cube root value of the number So, we get ∛985 ≈ 9.950 Hence the cube of 985 is 954,084,625, and the cube root of 985 is approximately 9.950.
If the side length of the cube is 985 cm, what is the volume?
The volume is 954,084,625 cm³.
Use the volume formula for a cube V = Side³. Substitute 985 for the side length: V = 985³ = 954,084,625 cm³.
How much larger is 985³ than 900³?
985³ – 900³ = 225,084,625.
First, find the cube of 985³, which is 954,084,625 Next, find the cube of 900³, which is 729,000,000 Now, find the difference between them using the subtraction method. 954,084,625 – 729,000,000 = 225,084,625 Therefore, 985³ is 225,084,625 larger than 900³.
If a cube with a side length of 985 cm is compared to a cube with a side length of 100 cm, how much larger is the volume of the larger cube?
The volume of the cube with a side length of 985 cm is 954,084,625 cm³.
To find its volume, we multiply the side length by itself three times (since it’s a 3-dimensional object). Cubing 985 means multiplying 985 by itself three times: 985 × 985 = 970,225, and then 970,225 × 985 = 954,084,625. The unit of volume is cubic centimeters (cm³) because we are calculating the space inside the cube. Therefore, the volume of the cube is 954,084,625 cm³.
Estimate the cube 984.9 using the cube 985.
The cube of 984.9 is approximately 954,084,625.
First, identify the cube of 985, The cube of 985 is 985³ = 954,084,625. Since 984.9 is only a tiny bit less than 985, the cube of 984.9 will be almost the same as the cube of 985. The cube of 984.9 is approximately 954,084,625 because the difference between 984.9 and 985 is very small. So, we can approximate the value as 954,084,625.
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 equals 8. Perfect Cube: A number that can be expressed as the cube of an integer. Cube Root: The number that, when multiplied by itself three times, gives the original number.
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.
: He loves to play the quiz with kids through algebra to make kids love it.