Subtract within 20 (no borrowing)

Use a fact family triangle to show your child that 5, 3, and 8 are related: 5 + 3 = 8, 3 + 5 = 8, 8 - 3 = 5, and 8 - 5 = 3. When students see subtraction as the reverse of addition, they can use the addition facts they already know to solve subtraction problems without starting from scratch. Alternate between timed practice (30 problems in 3 minutes builds fluency) and untimed, reflective work ("how did you figure that out?") to develop both speed and strategy.

These subtraction facts worksheets for 1st grade build the automaticity and fluency that children need to move comfortably into 2nd grade math. Students practice subtraction facts within 20 through drills, fact families, ten frame activities, and missing number problems, developing both speed and a deep understanding of how subtraction works. Our subtraction worksheets for 1st grade go beyond simple memorization by including multiple problem formats that push students to think flexibly about number relationships. Mastering subtraction facts frees up working memory for the more complex math strategies ahead.

This worksheet is designed for 1st Grade students (Ages 6-7), aligned to Common Core standard 1.OA.C.6. It can also be used as review for early students at the next grade level or as an introduction for advanced students.

Yes. This worksheet works for homeschool, classroom, and tutoring settings. Print individual pages for targeted practice, or print the full set as a packet. Works great as a morning warm-up, independent center activity, or fast-finisher task.

First graders should subtract within 20 using strategies like counting back, using related addition facts, and making ten (CCSS 1.OA.C.6). They should also understand the relationship between addition and subtraction and solve comparison word problems.

Use number lines and hundred charts to make subtraction visual. Practice fact families (e.g., 3+4=7, 7-4=3) to show how addition and subtraction are connected. Start with subtraction within 10 before moving to larger numbers. Consistent daily practice with worksheets builds confidence.