Grade 1 - Lesson 24 - Introducing Subtraction Facts to 18

Grade 1 Math Worksheets – Lesson 24: Introducing Subtraction Facts to 18

Help your first grader strengthen subtraction fluency with Lesson 24: Introducing Subtraction Facts to 18 from the Grade 1 Math Worksheets workbook. This lesson helps students move beyond smaller subtraction facts and begin practicing subtraction problems within 18.

Designed for children ages 6–7, this lesson gives students clear, step-by-step practice with subtraction facts. Children use number sentences, visual models, counting-back strategies, and repeated practice to understand how subtraction works with larger numbers. The lesson supports both accuracy and early mental math confidence.

With 18 pages of focused practice, Lesson 24 helps students build stronger subtraction skills before moving into mixed addition and subtraction, word problems, data, graphs, fractions, and two-digit number work. The worksheets are simple, engaging, and useful for classroom learning, homeschooling, tutoring, or extra practice at home.

Perfect for:

Parents, teachers, homeschoolers, tutors, and first-grade students who need practice with subtraction facts up to 18.