Australia markets open in 2 hours 9 minutes
  • ALL ORDS

    7,552.10
    -40.60 (-0.53%)
     
  • AUD/USD

    0.7577
    +0.0023 (+0.31%)
     
  • ASX 200

    7,298.50
    -43.70 (-0.60%)
     
  • OIL

    73.28
    +0.43 (+0.59%)
     
  • GOLD

    1,778.70
    +1.30 (+0.07%)
     
  • BTC-AUD

    43,873.01
    +994.09 (+2.32%)
     
  • CMC Crypto 200

    796.48
    -13.71 (-1.69%)
     

Tutor's 'insane' math trick apparently 'works every time': 'Why didn't teachers show us this?'

·1-min read

This math trick can help you multiply any two-digit number by 11. 

Arlene Resendiz is TikTok’s resident math whiz. When she’s not working as a professional tutor, she’s teaching the internet the quickest and easiest way to solve math problems.

In one video, Resendiz stitched a TikTok of @zhcyt’s girlfriend @munchie.michelle quickly solving a multiplication problem. He asked @munchie.michelle what 11 multiplied by 32 is while she was driving. She quickly responded with the correct answer: 352.

Resendiz assumed @munchie.michelle was using this handy math trick.

Here are 10 items to help you make healthier choices, starting in the kitchen:

“She used the 11s trick by multiplying the other number by 10 and adding another group to itself, giving you 352. It works every time,” Resendiz said

The math tutor then wrote out the equation on a whiteboard. First, she multiplied 32 by 10 to get 320. Then she added the original number, 32, to 320 to arrive at 352. 

“Why didn’t teachers show us this?” a person commented.

“That’s what I do in school all the time,” another said.

“That’s insane,” someone wrote

Resendiz’s method isn’t the only one that works, however. You can add the two digits of the number being multiplied by 11 and place the answer in between the original number. So in the same equation, you would simply add three and two to get five then place five between three and two to arrive at 352. 

Here are some of my favorite Earth-friendly products that bring the chill:

In The Know is now available on Apple News — follow us here!

If you liked this story, you might also enjoy a speech therapist on two books every parent should own to promote body language development.

More from In The Know:

Dad imitates the explosively messy way his 6 kids brush their teeth: ‘This was so painful to watch’

Marc Jacobs Beauty best sellers are on sale right now for as low as $11

The 9 best men’s pajamas that’ll keep you cool, even for the sweatiest of hot sleepers

Mom’s cardboard iPhone hack could save kids’ lives in an emergency situation

The post Tutor’s ‘insane’ math trick apparently ‘works every time’ appeared first on In The Know.

Our goal is to create a safe and engaging place for users to connect over interests and passions. In order to improve our community experience, we are temporarily suspending article commenting