Test your skills: Math

Let's start out by testing your knowledge of basic math operators. You will create four numeric values, add two together, subtract one from another, then multiply the results. Finally, we need to write a check that proves that this value is an even number.

Try updating the live code below to recreate the finished example by following these steps:

1. Create four variables that contain numbers. Call the variables something sensible.
2. Add the first two variables together and store the result in another variable.
3. Subtract the fourth variable from the third and store the result in another variable.
4. Multiply the results from steps 2 and 3 and store the result in a variable called finalResult.
5. Check if finalResult is an even number using one of the arithmetic operators. Store the result (0 for even, 1 for odd) in a variable called evenOddResult.

To pass this test, finalResult should have a value of 48 and evenOddResult should have a value of 0.

In the second task, you are provided with two calculations with the results stored in the variables result and result2. You need to take the calculations, multiply them, and format the result to two decimal places.

Try updating the live code below to recreate the finished example by following these steps:

1. Multiply result and result2 and assign the result back to result (use assignment shorthand).
2. Format result so that it has two decimal places and store it in a variable called finalResult.
3. Check the data type of finalResult using typeof. If it's a string, convert it to a number type and store the result in a variable called finalNumber.

To pass this test, finalNumber should have a result of 4633.33.

In the final task for this article, we want you to write some tests. There are three groups, each consisting of a statement and two variables. For each one, write a test that proves or disproves the statement made. Store the results of those tests in variables called weightComparison, heightComparison, and pwdMatch, respectively.