Grade 1 - Lesson 27 - Addition and Subtraction Using Tens and Ones

Grade 1 Math Worksheets – Lesson 27: Addition and Subtraction Using Tens and Ones

Help your first grader connect place value with addition and subtraction through Lesson 27: Addition and Subtraction Using Tens and Ones from the Grade 1 Math Worksheets workbook. This lesson helps students understand how two-digit numbers can be added and subtracted by thinking about tens and ones.

Designed for children ages 6–7, this lesson builds on earlier place value skills and helps students solve problems using a clear step-by-step method. Children practice breaking numbers into tens and ones, adding or subtracting groups, using visual models, and understanding how place value makes calculation easier.

With 20 pages of focused practice, Lesson 27 prepares students for stronger two-digit addition, two-digit subtraction, mental math, word problems, and future place value work. The activities are visual, structured, and easy to follow, making this lesson useful for classroom learning, homeschooling, tutoring, or extra practice at home.

Perfect for:

Parents, teachers, homeschoolers, tutors, and first-grade students who need practice connecting place value with addition and subtraction.