1.OA.B.4 Teacher Editions
CCSS.MATH.CONTENT.1.OA.B.4
:"Understand subtraction as an unknown-addend problem."
These teacher editions can help students practice this Common Core State Standards skill.
Teacher Editions
Building Math Fluency, Grade 1: Subtraction
Workbook
Building Math Fluency, Grade 1: Subtraction
Give your first graders the power to subtract with confidence, one smart strategy at a time with this teacher edition workbook by Evan-Moor!
Workbook
Building Math Fluency, Grade 1: Addition
Workbook
Building Math Fluency, Grade 1: Addition
Supercharge your first grader's addition skills with strategies that really stick, with this teacher edition workbook by Evan-Moor!
Workbook
