This is the next video building on your mental multiplication stills.
In this video we move on to multiplying numbers in their twenties.
Here is THE mental multiplication lesson playlist - progressing you through your mental multiplication.
• Tecmath's mental multi...
To donate to the tecmath channel:paypal.me/tecmath
To support tecmath on Patreon: / tecmath
To buy tecmath mechandise: teespring.com/stores/tecmath-...
Негізгі бет Math trick - multiplication of numbers in their twenties!
Пікірлер: 76