Well done for completing level 1!

Look at the abacus below. 

Each column of beads represents a 'place' value. 

The column on the right is the 'ones' place (1-9) and the column on the left is the 'tens' place (10-99).


Post Image

This abacus shows 3 tens and 1 unit. 

This is 30 + 1.

The number shown on the abacus is 31.