This is an assessment over Common Core standard CC.5.NBT.1. Designed with rigor in mind, you can use these eight place value problems for an assessment, worksheet, or just examples to use in class. This assessment looks deceptively easy, but my students really had to know this standard backwards and forwards to understand how to solve most/all of the problems. But of course, that's what common core is all about- deeper understanding. Thanks for looking!