People on TikTok are stunned that 29 multiplied by 3 is 87. Number values can be very psychological, "sounding" one way while being another. Division rules and common core principles can help unwire ...

A correction to an earlier version of this article has been appended to the end of the article. When Veera Sinha was a little girl in India, her father asked his kids to solve math puzzles in their ...