Divisibility (3-digit Rule for 11s)

Dec 22, 2021 | Yukon

This week, we use only addition to see if a 3 digit number is divisible by 3!

If you enjoy our #MathTricks, be sure to follow us on Facebook for more!

There's an easy trick to see if a 3 digit number is divisible by 11! Simply add the first and last digits. If they add up to the middle number, then it's divisble by 11! For example:

792

7+2=9

9 is the middle digit

therefore, 792 is divisble by 11!

Ready for some more? Try out the practice problems below!

Mental Math Trick - Easy way to subtract!

Aug 1, 2022 | Yukon

The last couple of weeks, we've been reviewing divisibilty rules. This week, we're starting off the 2022 new year with a cool mental math trick to help with subtracting across multiple zero's! For more #MathTricks, be sure to follow us on Facebook. ..

Divisibility (General Rule for 11s)

Jun 1, 2022 | Yukon

Last week, we learned how to tell if a 3 digit number is divisble by 11. This week, we take it to the next level. If you enjoy our #MathTricks, be sure to follow us on Facebook for more! We know how frustrating long division can be wit..

Keep Your Child's Math Skills Sharp This Summer

May 10, 2022 | Yukon

The flowers are blooming, the birds are chirping, and summer is just around the corner! While planning activities for your child this summer, consider including activities to keep their minds engaged. Educators are predicting students are falling behind..

Divisibility (3-digit Rule for 11s)

Related Articles

Mental Math Trick - Easy way to subtract!

Divisibility (General Rule for 11s)

Keep Your Child's Math Skills Sharp This Summer