TEKS 1.3 worksheets
Grade 1 · Computations & Algebraic Relationships
Use strategies and number facts to add and subtract within 20.
Below are free printable worksheets that support TEKS 1.3. Print them as PDFs, or generate a fresh one. Every answer key is computed in code, so it is never wrong.
Teaching guide
What students learn
Use strategies and number facts to add and subtract within 20.
How to teach it
Start by counting on from the larger number, then move to partitioning into tens and ones and adding each part, and finally column addition with regrouping.
Worked example
2 + 1 =
Answer: 3
Generated and checked in code, so it is correct.
Watch out for
Adding the tens and ones columns without carrying the regrouped ten, and always counting on from the first number rather than the larger.
Addition worksheets
All addition worksheets →Subtraction worksheets
All subtraction worksheets →Pre-K Subtraction
Set A · printable PDF · answer key
Pre-K Subtraction
Set B · printable PDF · answer key
Pre-K Subtraction
Set C · printable PDF · answer key
Pre-K Subtraction
Set D · printable PDF · answer key
Pre-K Subtraction
Set E · printable PDF · answer key
Pre-K Subtraction
Set F · printable PDF · answer key
Number Bonds worksheets
All number bonds worksheets →Kindergarten Number Bonds
Set A · printable PDF · answer key
Kindergarten Number Bonds
Set B · printable PDF · answer key
Kindergarten Number Bonds
Set C · printable PDF · answer key
Kindergarten Number Bonds
Set D · printable PDF · answer key
Kindergarten Number Bonds
Set E · printable PDF · answer key
Kindergarten Number Bonds
Set F · printable PDF · answer key