Hey Teachers! Here you have a new free resource to work on mathematics arithmetic operations. This resource has 4 different worksheets with a total of 24 different operations. The operations are heterogeneous fraction addition, what refers to fractions in which their denominators are different. You can download the whole pack at the end of this post.
In case you are a math teacher and you are interested on more arithmetic free resources, you just have to tap here and you will have access to a huge variety of math material for teachers.
Download the PDF file here 
