Add whole tens to 2-digit numbers (missing addend)
This worksheet will be available soon
Printable PDF · No ads
Trial members get new resources first via email.
Free printable add whole tens to 2-digit numbers (missing addend) worksheets for 3rd grade. Students determine which multiple of ten must be added to a 2-digit number to reach a given sum, combining place value and inverse-operation thinking. Ideal for deepening mental math flexibility in 3rd grade. Part of our addition worksheets collection.
What You'll Learn
- Find the missing multiple of ten in an addition equation
- Reason about place value to identify the unknown whole ten
- Strengthen inverse thinking between addition and subtraction
FAQ
How does the missing-addend format change the challenge of adding whole tens?⌄
Instead of computing a sum, students work backwards — they must figure out how many tens are needed to reach the total, which requires subtracting or using the relationship between addition and subtraction.
What place value insight makes these problems easier to solve mentally?⌄
Because the missing addend is always a multiple of ten, students only need to compare the tens digits of the given number and the sum, making the mental calculation straightforward.
How do these worksheets prepare students for algebraic thinking?⌄
Solving n + 47 = 87 for n is an early form of algebraic reasoning — these worksheets lay the groundwork for understanding variables and equations in later grades.
Ratings & Reviews
3Lisa M.
Pre-K Teacher · Verified download
I love that you're adding this. It fills a real gap in what's available for free online.
Helpful · 5
Sarah K.
Kindergarten Teacher · Verified download
So excited for this to be ready! My students really need more practice with this topic.
Helpful · 11
Maria R.
Homeschool parent · Verified download
Can't wait! This is exactly what we've been looking for. Please make it soon!
Helpful · 7
What is ClassWeekly?
ClassWeekly offers free worksheets and printable learning resources for kids in preschool to grade 5. All worksheets are aligned to Common Core standards and designed by educators. Become a member to access the full library and download unlimited PDFs.
Add 1 & 2-digit numbers (with missing addend)
Add 2-digit and 1-digit numbers (with carrying)
Add 2-digit numbers (sum under 100)
Add one 2-digit and two 1-digit numbers
Add two 2-digit numbers in columns (with regrouping)
Add two whole tens and two 1-digit numbers
Add whole tens (3 addends)
Add whole tens to 2-digit numbers (with missing addend)