Lesson 5: Simple Subtraction (8 - 5)
Intermediate Level
Instructions
- Let's subtract 5 from 8 in the rightmost column.
- Set 8: Slide the red bead down (5) and 3 blue beads up (3).
- Subtract 5: Slide the red bead back up. The value should be 3!
T
100B
10B
B
100M
10M
M
100K
10K
K
100
10
1
5
1
1
1
1
5
1
1
1
1
5
1
1
1
1
5
1
1
1
1
5
1
1
1
1
5
1
1
1
1
5
1
1
1
1
5
1
1
1
1
5
1
1
1
1
5
1
1
1
1
5
1
1
1
1
5
1
1
1
1
5
1
1
1
1
Value: 0