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# Math Calculators

The online calculators in this section are intended to help students with math homework. They are also suitable for any situation requiring number calculations. For example, conversion of units, discounts etc.

The online fraction calculator is ideal for students, parents, or teachers when checking the answers to fraction calculations. The fraction calculator handles the adding, subtracting, multiplying and dividing of fractions, mixed numbers and negative values.

Browse the calculators below and choose which one is suitable for your needs. These calculators are perfect for students to use for homework or general use for any math challenge you may have.

## What are math calculators?

Math calculators are tools that allow you to perform simple to complex arithmetic operations in no time. At times it becomes difficult for a child or any else working on different mathematical operations to reach the exact results especially when the numbers are in fractions or in decimals.

Who are math calculators suitable for?

There is no specific age group that math calculators are suitable for. The math calculators are suitable for any child or a person who wishes to find the results of specific mathematical operations such as percentage, area, average, volume etc. a person need not be in schooling years to use a math calculator. Let us take an example. Suppose you were drawing a certain salary, say “ x “. now you have been offered a raise which now takes your salary to a figure, say “ y “. What if you wish to check what has been the percentage increase in your salary? This is where you will find the percentage increase calculator useful and efficient. You just need to enter both the values and you will instantly get the percentage increase or even decrease.  Let us consider an actual example instead of talking in a variable.

Suppose you were till now drawing a salary of £ 2500 per month. Now you have been offered a raise which takes your updated salary to £ 3200 per month. What is your percentage increase?

If we were to go about using the formula, we know that the formula to find the change in percentage is given by

Change Percent = $\frac{Final Value-Original Value}{Final Value-Original Value}$ x 100

In our example, we have,

Final value = £ 3200 while

Original Value = £ 2500

Substituting the values in the above formula, we will have,

Change Percent = $\frac{3200-2500}{2500}$ x 100 = $\frac{700}{2500}$ x 100 = 28 % Hence, you have received a 28 % rise in your salary. Now, this was easy, as we had whole numbers where the numerators were completely divisible by the denominators. What if you ah the value in decimals, say original value 5.4 and the final value of 6.3? Would it have been that easier? Certainly no. in such cases, especially if you running out of time or want to check your results, you can use the percentage calculator. The results shown by the percentage calculator would be – We can see the change, in this case, would be 16.667 %.

## How are math calculators useful?

There are a number of reasons that math calculators are considered extremely useful. Some of these are –

### Comfort Couple with Technology

Using a calculator certainly, does not mean that you become dependent on the calculator for every smallest calculation. In fact, the use of math calculators motivates you to solve more problems and it is with this repeated use that eventually you have a better grasp of the formulae and that instils confidence in you to go for complex mathematical calculations as well.

### Promoting Accuracy

We all learn rounding off in mathematics. However, it is not advisable to round off a result if there is a chance of getting an accurate one at the end. Math calculators help you do away with this practice. In fact, math calculators can quickly validate a student’s hard work, or show them the need to fix something. Without a calculator, the only other way to do this is by giving students a list of answers or making them wait till the teacher is ready.

### Making Math more enjoyable

When you are able to solve a problem, you tend to enjoy it and are also more than willing to try some more of it. This is an area where math calculators prove extremely useful. Some students love doing basic multiplication, subtraction, and addition in their heads. They’re able to visualize numbers in their mind quickly and feel empowered when they do basic calculations on their own. But not everyone is able to do so. By the use of math calculators, you can gain confidence in the concepts of maths and when you start getting results, you feel go about it and enjoy mathematics which otherwise would not be the case.

## How to use math calculators?

Here we have for you, calculators for some mathematical calculations that we use in our daily lives and not just for passing math examinations. Some of these areas are –

### Arithmetic Sequence Calculator

We know that Arithmetic Progression (AP) is a sequence of numbers in order in which the difference of any two consecutive numbers is a constant value. In AP, we come across three main terms, which are denoted as Common difference (d), nth Term (an) and Sum of the first n terms (Sn). What if we need to create an arithmetic sequence starting with the number 1, having a common difference of 4 with a total of 5 terms in the sequence. We can just use the arithmetic sequence calculator, and we will have,

### Average Calculator

Suppose you appeared for 5 exams where you scored, 5, 6, 7, 7 and 9 marks respectively, what is your average score? You just need to enter these marks in the average calculator and you will instantly get the result.

### Rectangle Area Calculator

Below is a sneak peek of some of the options that are available in our rectangle area calculator. It can be clearly seen that one can choose options such as length and width, length and diagonal etc. you just need to enter the values and our calculator will do the rest for you.

The use of this calculator will not only ease your calculations but help you understand and learn how the area of a rectangle is calculated using different dimensions such as length, breadth, diagonals etc.

### Percentage Increase Calculator

To use the percentage calculator in order to find out the percentage change we use the box that says Enter Information….. From _ To __. Below the sneak peak of how it is displayed –

Now, we place the initial percentage value in the first box and the final percentage value in the second box.

If we want to check the above example using the percentage calculator, we would put 50 in the first box and 75 in the second box.

The answer shown in the result box is our answer, i.e. 50%

### Cubic Feet Calculator

Suppose we wish to find the volume of the cuboid having the dimensions 1.5 cm, 2.8 cm and 3.6 cm. we just need to enter these values as shown below and we will get the result.

### Double Angle Formula Calculator

Suppose we wish to find the values of sin 2θ, cos 2θ and tan 2θ for a particular angle, say 30o. How will we find these values? We simply need to use the double angle calculator and enter 30 in the given column. The online calculator show instantly show up all the three angles values such as the one shown below –

### Percentage calculator

The percentage calculator below is an accurate tool that allows calculating as well as checking the percentage of a number. For instance, you want to check whether the answer in the example is correct or not.

How to use the percentage calculator to check this?

Suppose we want to check, what per cent of 25 is 50? We will just enter the values 25 and 50 in the below shown manner, and we will get the result.