Quick Overview: This video covers steps for single and double digit addition with 4/5 exchanges. Both the This video shows a description of division using the This video shows a description of the 99/100 exchange, also known as the rule of 99, on the
Cranmer Abacus Counting Method Multiplication - Detailed Overview & Context
This video covers steps for single and double digit addition with 4/5 exchanges. Both the This video shows a description of division using the This video shows a description of the 99/100 exchange, also known as the rule of 99, on the This video shows how to work 5 simple subtraction problems with the This video walks through the steps of more subtraction problems making the 4-5 exchange. Other videos coming soon on the 9/10 ... This video shows a description of the 9/10 exchange, also known as the rule of 9, on the
