A number line can also be used to represent both positive and negative integers as well. Writing numbers on a number line makes comparing numbers and answering math questions easier. 
We always move right to add, move left to subtract.

This set includes 12 number lines, 6 are have numbers (1-5, 1-10, 1-20) and the other 6 have no numbers.  6 cards are Addition, 6 cards are subtraction.

Dry erase marker is included.

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All of Snapdragon products are shipped ready to use. Each item is laminated, velcro is applied where needed and a dry erase marker is supplied for products that require one. Should you have any questions please use the Contact Me page to send me an email. I will reply back within 24 business hours.