educational advantage Connecting Number Rods Addition & Subtraction Cards – 1-20

A pack 20 x A5 cards designed to be used with connecting number rods using numbers 1-20 in the question.

There are 10 addition and 10 subtraction colour-coded cards.

Each card has a question on the front and the answer with images of the connecting number rods on the reverse.

Any card can be completed using the connecting 64-piece set of number rods.