Disclaimer: This program uses Java. Java is getting quite hard to use. This renders this program unusable for most people. If you know of an update or good alternative, let me know.
This is from the “NLVM” The National Library of Virtual Manipulatives. A useful site
Base Blocks Decimals – Add and subtract decimal values using base blocks.
http://nlvm.usu.edu/en/nav/frames_asid_264_g_1_t_1.html?from=topic_t_1.html
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