1. Subtracting Two Numbers Directly.Another term for directly is “no synthesis.” When subtracting directly all the beads can be pushed away or “cleared” from the horizontal bar. From http://www.uabacus.arizona.edu/http://www.uabacus.arizona.edu/ Developed by Dr. L. Penny Rosenblum

2. 9 – 6 = 3 Set: 9 Ask: “Can I subtract 6 directly?” Answer: “Yes” Clear: 6 Difference: 3 How do you subtract? YOU CLEAR!!!! From http://www.uabacus.arizona.edu/http://www.uabacus.arizona.edu/ Developed by Dr. L. Penny Rosenblum

3. 8 – 5 = 3 Set: 8 Ask: “Can I subtract 5 directly?” Answer: “Yes” Clear: 5 Difference: 3 From http://www.uabacus.arizona.edu/ Developed by Dr. L. Penny Rosenblum

4. 92 – 51 = 41 Set: 92 Ask: “Can I subtract 50 directly?” Answer: “Yes” Clear: 50 Ask: “Can I subtract 1 directly? Answer: “Yes” Clear: 1 Difference: 41 From http://www.uabacus.arizona.edu/http://www.uabacus.arizona.edu/ Developed by Dr. L. Penny Rosenblum

5. 39 - 17 = 22 Set: 39 Ask: “Can I subtract 10 directly?” Answer: “Yes” Clear: 10 Ask: “Can I subtract 7 directly? Answer: “Yes” Clear: 7 Difference: 22 From http://www.uabacus.arizona.edu/ Developed by Dr. L. Penny Rosenblum

6. 75 - 25 = 50 Set: 75 Ask: “Can I subtract 20 directly?” Answer: “Yes” Clear: 20 Ask: “Can I subtract 5 directly? Answer: “Yes” Clear: 5 Difference: 50 From http://www.uabacus.arizona.edu/ Developed by Dr. L. Penny Rosenblum