Place Value

The correct answer is:

1. First, represent the number 22 on an abacus. Then add the number 36. Count the total number of beads. So we get,
   22 + 36 = 58
   
   
   
2. First, represent the number 54 on an abacus. Then add the number 11. Count the total number of beads. So we get,
   54 + 11 = 65
   
   
   
3. We have to subtract 36 from 87. Remove 3 beads from 8 and 6 beads from 7 beads. Then count the remaining beads. So we get,
   87 – 36 = 51