Combine 10s and 1s
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Free printable Combine 10s and 1s worksheets for 1st grade. Students practice building two-digit numbers by combining a given number of tens and ones, reinforcing place value composition skills. Directly supports two-digit addition and number sense. Part of our place value worksheets collection.
What You'll Learn
- Combine a number of tens and ones to form a two-digit number
- Write the total when given separate tens and ones values
- Build two-digit numbers by joining tens and ones parts
FAQ
What is the difference between composing and decomposing numbers in place value?⌄
Composing means building a number from its parts (3 tens + 5 ones = 35), while decomposing means breaking it down — both skills are needed for fluent computation.
How does combining 10s and 1s connect to expanded form notation?⌄
When students write '2 tens + 6 ones = 26,' they are expressing the number in expanded form, a key representation in 1st grade standards.
Can combining tens and ones be practiced with physical materials?⌄
Yes — having students use base-ten rods and cubes to build the given number before writing it provides a concrete anchor for the abstract notation.
Ratings & Reviews
3Maria R.
Homeschool parent · Verified download
Can't wait! This is exactly what we've been looking for. Please make it soon!
Helpful · 7
Rachel H.
Homeschool parent · Verified download
We've been waiting for this topic. Signed up just to get notified when it's ready.
Helpful · 6
Sarah K.
Kindergarten Teacher · Verified download
So excited for this to be ready! My students really need more practice with this topic.
Helpful · 11
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