From ixl.com, where "All of IXL's dynamic math and language arts skills are aligned to your standards, including:
The Common Core State Standards
All 50 states and D.C."
Accessed from ixl's seventh grade math page, here are three problems from the "Add and subtract integers: word problems" sample problems:
Extra Credit :
The most relevant 7th grade Common Core Standard is:
CCSS.Math.Content.7.NS.A.1 Apply and extend previous understandings of addition and subtraction to add and subtract rational numbers; represent addition and subtraction on a horizontal or vertical number line diagram.Have the Common Core authors done a good job writing this standard?