As a bonus, the answer dividers are looking for will exist in the number already in the hundreds, tens, and ones place. Similar to the trick with dividing by five, if a number ends in a zero, then it’s divisible by 10. For instance, the sum of the number 72 is 9, and when it’s divided by nine, the answer is 8! Dividing by 10 If the sum of all of the digits of the number is divisible by nine, then the number itself is divisible by nine. As an example 9180, the last three digits - as their own number - can be divided by 8, as can 9128. If the last three digits create a number that is divisible by 8, the entire number will also be divisible by 8. This is another division hack that works with larger numbers. And when we check out work, sure enough, 161 divided by 7 is 23! Dividing by 8 Therefore, we can say that 161 is divisible by 7.
If you subtract 2 from 16, you get 14 which is divisible by 7. Here’s an example: Let’s say the number is 161. Double that number, then subtract the doubled number from the remaining two digits of the number. This one is a little trickier and works with numbers three digits or longer, so bear with us here! To check if the number is divisible by 7, start with the last digit of the number. If the above rules for 2 and 3 are true, then you can divide the number by 6 as well.įor instance, if a number’s digits add up to something divisible by 3 and end in an even number, it will be divisible by 2,3, and 6. This division hack has two steps, but it’s worth the practice. Dividing by 5Īnother great one to remember: any number that ends in a 0 or a 5 is always divisible by 5. Are those two digits divisible by 4? That means the entire number is as well!įor example, let’s look at a crazy long number like 5601120. When dividing by 4, look at the last two digits of the number. Skeptical? Let’s look at a bigger number: 423.
Here’s a lesser known fun fact: if the sum (the total of numbers added together) in a given number can be divided by three, so can the number! For instance, 566 can be evenly divided by 2: 283. Dividing by 2Įvery even number is divisible by 2 that’s any number ending in a 0,2,4,6, or 8. Dividing by 1Īn important one to remember (if you’ll excuse the pun): any number divided by 1 is the number itself! For instance, 300 divided by 1 is 300.
With that in mind, here are a few division shortcuts that can help students learn how numbers work and get the hang of those mathematical building blocks. So, a little creativity and a few tips and tricks can’t hurt, right?Īlong with everyday ways to make math fun, encouraging kids to try a few math games and activities can go a long way towards catching up and even enjoying math class! Not only will these perhaps boost their confidence (and hopefully quiz scores), they’ll have speedy mental calculation ready for their next math competition.Īnd there’s no denying that now is an excellent time for many students to get some extra math support and tutoring!Īccording to a recent McKinsey study, students are about five months behind in math due to the impacts of COVID-19. We’ll walk through division shortcuts for numbers 1-10 that will be great to share with kids. So, let’s take some of the stress out of the process with some useful division tricks that are great to have in your back pocket for school and any situation that requires some low-tech math! Useful dividing tricks That said, division isn’t always easy! Especially when dealing with more and more complex numbers, learning to divide can be frustrating and require just as much eraser as pencil. To get to the next level, it’s essential to learn the concepts that will help them understand what’s ahead! Division, just like multiplication and graphing quadratic equations, is a core skill in any budding mathematician’s tool kit. Like virtually any STEM subject, math concepts build upon each other like rungs of a ladder. Once mastered, these division tricks will make basic math a breeze! Whether your student needs help with quick calculations or is memorizing their math facts, it comes in handy to have one or two “math hacks” ready to go!ĭivision skills are a staple of elementary math for good reason: the number sense and logical skills students build by learning to divide are key to advancing their math skills.
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