Add 2-digit numbers using the Abacus � tens and units rods
📚 How to Add Double Digit Numbers
💡
Step 1:
Set the first number on your abacus (tens rod + units rod)
Step 2:
Add the tens digit of the second number to the tens rod
Step 3:
Add the units digit of the second number to the units rod
Step 4:
Read the answer!