1 More, 1 Less; 10 More, 10 Less
Updated July 26, 2018 |
Infoplease Staff
![Updated by an Infoplease Editor on July 26, 2018](/themes/ip/images/info-circle.png)
In this video, Alex uses place-value blocks to learn how the 10s and 1s place digits increase or decrease as values are added or removed from 2-digit numbers.