Mental Math Practice 2: Subtraction Problems by Spencer King

https://thebookvoice.com/podcasts/2/audible/57420 to listen full audiobooks. Title: Mental Math Practice 2: Subtraction Problems Author: Spencer King Narrator: Spencer King Format: mp3 Length: 1 hr and 26 mins Release date: 03-28-22 Ratings: 5 out of 5 stars, 5 ratings Genres: Mathematics Publisher's Summary: Do you want to become mentally sharper and quicker? Do you want to be able to save time and calculate large numbers on the go while you're shopping or splitting up a bill at a restaurant? Do you want other people to notice how you seem to not need a calculator, how you seem like such a genius? Mental math is the ability to solve math problems in your head, without the need to write or use a calculator. And it has all of the benefits implied above and much more. Preliminary studies have even shown that mental math can improve your emotional health as well.