Adding and Subtracting One-Digit Numbers (3)

Example :    2 + 6 = 8 

Step 1: Set 2 . 

Step 2: Move down 5 with the index finger and move up 1 with the thumb at the same time. 

Note : This example illustrates the procedure used in adding both a 5-unit bead and one or more 1-unit beads. The problems to which this procedure applies are:      

1+6 
2+6 
3+6     
1+7 
2+7     
1+8