CCSS 1.OA.B.4 Worksheets
Grade 1 · Operations & Algebraic Thinking
Understand subtraction as finding an unknown addend, linking it to a related addition fact.
Below are free printable worksheets that support 1.OA.B.4. Print them as PDFs, or generate a fresh one. Every math answer key is computed in code, so it is never wrong.
Teach this standard
Deliver a whole lesson on 1.OA.B.4 from a textbook-grade teaching unit, with a hook, worked examples, diagrams, misconceptions, and an exit ticket.
Teaching guide
Understand subtraction as finding an unknown addend, linking it to a related addition fact.
Use part-part-whole models to show that subtraction can mean finding the missing addend in a related addition fact.
Generated and checked in code, so it is correct.
Seeing subtraction as a separate procedure and not using the related addition fact.
Subtraction worksheets
All subtraction worksheets →Sets A-F are the same worksheet with different questions - print any (or all) for fresh practice.
Fact Families worksheets
All fact families worksheets →Sets A-F are the same worksheet with different questions - print any (or all) for fresh practice.