Last updated on July 3rd, 2025
Even numbers are a fundamental concept in mathematics and they are integers divisible by 2 without remainder. Even numbers play a significant role in organizing data, architecture, pairing, and grouping items equally. In this topic, we will learn about even numbers between 20 and 30.
Even numbers are the numbers that are divided by 2 evenly without remainder. All even numbers are multiples of 2. The last digit of even numbers always ends with 0, 2, 4, 6, or 8. There are a total of 6 even numbers ranging from 20 to 30. The even number follows a simple formula of 2n, where n is an integer.
Learning about even numbers can be made easier with a visual aid that helps children grasp the concept more effectively. A chart allows them to recognize the sequence of even numbers more clearly. Here’s a list of even numbers from 20 to 30:
Even numbers are expressed in the form of ‘n = 2k’. Here, ‘k’ is an integer, and ‘n’ is the number. These numbers are divisible by 2 and the remainder equals zero. Now, let us list the even numbers 20 to 30. The even numbers from 20 to 30 are as follows: 20, 22, 24, 26, 28, and 30. There are a total of 6 even numbers.
To find the sum of even numbers, the formula is - S = n(n+1), where ‘n’ is the count of even numbers, and ‘S’ is the sum. There are a total of 6 even numbers between 20 and 30. Thus, we can calculate the sum directly as: S = 20 + 22 + 24 + 26 + 28 + 30 = 150 Therefore, 150 is the sum of all even numbers from 20 to 30. If we add an even number to another even number, the answer will always be an even number. Even numbers are multiples of 2. The sum of two multiples of 2 is also another multiple of 2; therefore, it is always an even number. For example, 22 + 28 = 50
Subtraction of even numbers involves subtracting each even number from the next. Each even number is uniformly spaced by 2. If we subtract two even numbers, it gives an even number as the result. For example, 28 - 20 = 8 30 - 22 = 8 24 - 20 = 4
Find the sum of even numbers between 20 and 30.
150 is the sum of even numbers between 20 and 30.
As we know, 20, 22, 24, 26, 28, and 30 are the even numbers between 20 and 30. Next, we need to calculate the sum of these numbers. 20 + 22 + 24 + 26 + 28 + 30 = 150 The sum of even numbers 20 to 30 is 150.
Jack has 6 apples. He wants to divide them equally between his 2 friends. How many apples will each friend get?
Each one gets 3 apples.
There are 6 apples with Jack, and it is an even number. So he has to divide equally between his 2 friends, making it — 6 ÷ 2 = 3, therefore, each friend gets 3 apples.
In a class, there are 30 desks. Each desk is labeled with a number. All the even-numbered desks are reserved for left-handed students. How many even-numbered desks are there?
15 desks.
To find the even-numbered desks in the class, we divide the total number of desks by 2. Because only the even-numbered desks are reserved for left-handed students. 30 ÷ 2 = 15 So, 15 desks are reserved for left-handed students in the class.
Emily has 4 cats, 2 dogs, and 6 canaries. Each pair of legs makes an even number. How many legs do all the animals have?
36 legs in total.
First, we have to calculate the total number of legs for each type of animal: Cats have 4 legs, and there are 4 cats, therefore: 4 × 4 = 16 Dogs have 4 legs, and there are 2 dogs, therefore: 2 × 4 = 8 Canaries have 2 legs, and there are 6 canaries, therefore: 6 × 2 = 12 Therefore, the total number of legs all the animals have is 16 + 8 + 12 = 36. The animals have 36 legs in total.
There are 26 people in a room. If the people are grouped into sets of 2, how many sets are there?
13 sets.
Grouping into sets of 2 means dividing the total number of people by 2. We need to calculate it as: 26 ÷ 2 = 13. If the people are grouped into sets of 2, there are a total of 13 sets.
Even number: Even numbers are those that can be divided by 2 without leaving any remainder. It has a formula of 2n, where n is an integer. The last digit of even numbers always ends in 0, 2, 4, 6, or 8. For example, 22, 24, 30 are some even numbers. Multiple: A number that is a product of multiplying a number by an integer. For instance, 20, 22, 24, 26, etc., are the few multiples of 2. These numbers result from multiplying 2 by other integers. Remainder: For even numbers, when divided by 2, the remainder is always zero. If we divide a number by another, the leftover value is known as the remainder. Integer: A whole number that can be positive, negative, or zero. Integers do not include fractions or decimals. Sum: The result of adding two or more numbers. For even numbers, the sum of two even numbers is always another even number.
Hiralee Lalitkumar Makwana has almost two years of teaching experience. She is a number ninja as she loves numbers. Her interest in numbers can be seen in the way she cracks math puzzles and hidden patterns.
: She loves to read number jokes and games.