| Example 2 |
| Add 52 and 13 with the help of an abacus. |
| 52 is shown on an abacus as: |
| Step 1: Add ones |
| 2 ones + 3 ones = 5 ones |
| Add 3 more beads to ones rod. |
| Step 2: Add tens |
| 5 tens + 1 ten = 6 tens |
| Add 1 more bead to tens rod. |
| The sum of addends 52 and 13 is 65. |
Exercise 2.2
A. Draw beads on the abacus to get the sum.
