Math in JavaScript

This video tutorial introduces the use of JavaScript for performing mathematical operations. It covers setting up an HTML environment, executing basic arithmetic operations like addition, subtraction, multiplication, and division, and using the modulus operator to find remainders. The tutorial also explains the order of operations using PEMDAS and discusses the handling of division by zero in JavaScript, which results in an Infinity value. The video aims to equip viewers with the skills to perform math operations in JavaScript efficiently.

What is the primary purpose of creating variables in JavaScript for arithmetic operations?

• To make the code run faster

• To make the code look longer

• To store values for later use

• To confuse the programmer

Which operator is used for multiplication in JavaScript?

• *

• /

• -

• x

What is the result of the modulus operation 9 % 2?

• 3

• 0

• 2

• 1

How can you determine if a number is even using the modulus operator?

• Check if the number is greater than 2

• Divide the number by 2 and check if the result is 1

• Multiply the number by 2 and check if the result is even

• Use the modulus operator with 2 and check if the result is 0

What does PEMDAS stand for in the context of JavaScript operations?

• Parentheses, Exponents, Division, Multiplication, Subtraction, Addition

• Parentheses, Exponents, Division, Multiplication, Addition, Subtraction

• Parentheses, Exponents, Multiplication, Division, Subtraction, Addition

• Parentheses, Exponents, Multiplication, Division, Addition, Subtraction

What happens when you try to divide a number by zero in JavaScript?

• The program crashes

• An error message is displayed

• The result is zero

• The result is Infinity

How can you round a floating-point number to the nearest integer in JavaScript?

• Use Math.floor()

• Use Math.ceil()

• Use Math.round()

• Use Math.trunc()