Grade 2 Missing Addend Addition Worksheets
Start with eight focused practice problems, then use the answer key below to check the worksheet.
Practice Worksheet
Grade 2 Missing Addend Addition Practice
Solve each problem. Show your work.
- 1.38 + ___ = 45
- 2.36 + ___ = 43
- 3.64 + ___ = 69
- 4.46 + ___ = 47
- 5.38 + ___ = 39
- 6.86 + ___ = 89
- 7.28 + ___ = 32
- 8.96 + ___ = 98
Show answer key
- Question 1: 7
- Question 2: 7
- Question 3: 5
- Question 4: 1
- Question 5: 1
- Question 6: 3
- Question 7: 4
- Question 8: 2
Next Steps
Finished the worksheet? Get it checked in seconds
Snap a photo of your child's completed Grade 2 missing addend addition work and Gradulo checks every answer with step-by-step feedback.
Check my workNeed another worksheet?
Log in to generate more Grade 2 missing addend addition worksheets and keep practice going.
About These Worksheets
Grade 2 students extend missing addend problems to two-digit numbers, applying regrouping concepts when needed to find the answer.
Missing addend worksheets present problems like 7 + __ = 12, where students must find the unknown number that completes an addition sentence rather than simply computing a sum. This small shift in format has an outsized effect: it introduces algebraic thinking years before students see a formal equation with a variable, and it strengthens the connection between addition and subtraction as inverse operations.
To solve a missing addend problem, students typically reason "what do I need to add to 7 to reach 12?" — which is functionally a subtraction problem in disguise. Practising this skill helps students see addition and subtraction as two views of the same relationship, a concept that pays off throughout elementary math and directly prepares students for solving equations in later grades.
Skills Practised
- Solving addition sentences with an unknown addend
- Using the relationship between addition and subtraction to find missing values
- Reasoning about "how many more" to reach a target sum
- Checking a missing addend answer by substituting it back into the equation
- Building early algebraic thinking through fill-in-the-blank equations
Parent Tip: Frame missing addend problems as questions instead of equations — ask "7 and what makes 12?" rather than reading the blank as a fill-in-the-box exercise. It keeps the reasoning natural.