(Writing this as an 8th-grade student) I honestly taught myself how to do this. It's definitely way easier than multiplying 9s normally, and its consistent too. You just add 10 to (x) multiple of 9...

1. Közösség
2. Classroom Tips and Tricks
3. 9-Mulitples using Make10 (we continue to wastes MM of hours of student time - plz read)

What kind of math is this 😭 I want to help you (I can learn things very quickly) but I've never done this type of math before

1. Közösség
2. Study Group
3. Don't understand a question on Euler's method on this site's quiz