![This simple to use, incredibly versatile set includes 100 large plastic bones with sliders to conceal any part of the addition and subtraction sums to 20.](https://eu.evocdn.io/dealer/1054/catalog/product/images/311018_J43575-P.jpg)
Number Crunchers to 20 (Pack of 100)
![](https://eu.evocdn.io/dealer/1054/content/media/Content_Pages/Freight-Icon-Orange.png)
Free Delivery on most orders over £75*
(*Excl. special items where indicated). See delivery policy for details
Estimated Delivery: 1 to 3 Business Days*
(*Unless stated on product details)
Specifications
CN
Normally delivered within 2-3 working days
60101007
EC-0646
Own Brand
Mathematics
Add,Subtract,Multiply,Divide
Description
This simple to use, incredibly versatile set includes 100 large plastic bones with sliders to conceal any part of the addition and subtraction sums to 20.