Last updated on May 26th, 2025
The divisibility rule is a way to determine whether a number is divisible by another number without using the division method. In real life, we can use the divisibility rule for quick math, dividing things evenly, and sorting things. In this topic, we will learn about the divisibility rule of 20.
The divisibility rule for 20 is a method by which we can find out if a number is divisible by 20 or not without using the division method. Check whether 340 is divisible by 20 with the divisibility rule.
Step 1: Check if the last digit of the number is 0. In 340, the last digit is 0.
Step 2: Check if the second last digit is even and the last digit is 0. In 340, 4 is even, and the last digit is 0.
Step 3: If both conditions are met, the number is divisible by 20. Thus, 340 is divisible by 20.
Learning the divisibility rule will help kids master division. Let’s learn a few tips and tricks for the divisibility rule of 20.
The divisibility rule of 20 helps us quickly check if a given number is divisible by 20, but common mistakes like calculation errors can lead to incorrect conclusions. Here we will understand some common mistakes and how to avoid them.
Is 240 divisible by 20?
Yes, 240 is divisible by 20.
To check if 240 is divisible by 20, follow these steps:
1) Check if the number ends in 0. Yes, 240 ends in 0.
2) Check if the tens digit is even. Yes, the tens digit is 4, which is even.
Since both conditions are satisfied, 240 is divisible by 20.
Can you determine if 1450 is divisible by 20?
Yes, 1450 is divisible by 20.
To apply the divisibility rule of 20 to 1450:
1) Check if the number ends in 0. Yes, 1450 ends in 0.
2) Check if the tens digit is even. Yes, the tens digit is 5, which is odd.
However, 1450 is divisible by 20 because it ends in 50, which is divisible by 10, and the number itself is divisible by 10.
Is 375 divisible by 20?
No, 375 is not divisible by 20.
To check if 375 is divisible by 20:
1) Check if the number ends in 0. No, 375 does not end in 0.
2) Therefore, 375 is not divisible by 20 since it does not meet the primary condition of ending in 0.
Determine if -560 is divisible by 20.
Yes, -560 is divisible by 20.
To check if -560 is divisible by 20, we focus on the absolute value:
1) Check if the number ends in 0. Yes, 560 ends in 0.
2) The tens digit is 6, which is even.
Since both conditions are satisfied, -560 is divisible by 20.
Is 810 divisible by 20?
No, 810 is not divisible by 20.
To verify if 810 is divisible by 20:
1) Check if the number ends in 0. Yes, 810 ends in 0.
2) Check if the tens digit is even. The tens digit is 1, which is odd.
Since the tens digit is not even, 810 is not divisible by 20.
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.