Adding whole tens, missing number
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Free printable adding whole tens with missing number worksheets for 2nd grade. Students find the unknown multiple of 10 in equations like 40 + ___ = 90, combining whole-tens fluency with missing-value reasoning. These worksheets reinforce the inverse relationship between addition and subtraction at the tens level. Part of our addition worksheets collection.
What You'll Learn
- Find the missing whole ten in an addition equation
- Apply place value reasoning to identify the unknown tens value
- Strengthen mental math with missing number ten problems
FAQ
How does a missing-number whole-tens problem differ from a standard whole-tens addition problem?⌄
Standard problems ask for the sum; missing-number problems ask students to identify which multiple of 10, when added, produces the given total — requiring subtraction thinking.
What fact knowledge helps students solve whole-tens missing number problems quickly?⌄
Students who know their single-digit addition and subtraction facts can translate them directly to the tens (e.g., 9 - 4 = 5 means 90 - 40 = 50 means 40 + ___ = 90 → 50).
How can these worksheets be differentiated for advanced 2nd graders?⌄
Extend the number range to within 1,000 or include three-addend missing-number problems (e.g., 20 + ___ + 40 = 100) to provide additional challenge.
Ratings & Reviews
3Emily W.
Homeschool parent · Verified download
Excited for this one! I've been hunting for a good printable on this topic for weeks.
Helpful · 9
Priya N.
Kindergarten Teacher · Verified download
This is going straight into my lesson plans the second it drops. Please prioritize this one!
Helpful · 13
Maria R.
Homeschool parent · Verified download
Can't wait! This is exactly what we've been looking for. Please make it soon!
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