CCSS 1.OA.D.8 Worksheets
Grade 1 · Operations & Algebraic Thinking
Find the missing whole number in an addition or subtraction equation involving three numbers.
Below are free printable worksheets that support 1.OA.D.8. 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.D.8 from a textbook-grade teaching unit, with a hook, worked examples, diagrams, misconceptions, and an exit ticket.
Teaching guide
Find the missing whole number in an addition or subtraction equation involving three numbers.
Cover the unknown in a part-part-whole model, decide whether a part or the whole is missing, then write the matching addition or subtraction equation.
Generated and checked in code, so it is correct.
Filling the blank with the result of the first operation seen instead of checking what value balances the equation.
Number Bonds worksheets
All number bonds worksheets →Sets A-F are the same worksheet with different questions - print any (or all) for fresh practice.
Addition worksheets
All addition worksheets →Sets A-F are the same worksheet with different questions - print any (or all) for fresh practice.
Subtraction worksheets
All subtraction worksheets →Sets A-F are the same worksheet with different questions - print any (or all) for fresh practice.