Addition and Subtraction Facts 1-18 Printable Workbook

Students recall addition and subtraction facts within 18 with increasing fluency across sequential practice pages.

Students add three single-digit numbers in a single equation.

Students understand subtraction as an unknown-addend problem by using addition to check a subtraction answer.

Students determine whether a given addition or subtraction equation is true or false, correcting any error.

Students write and solve their own number sentences to solve addition and subtraction word problems.

Work through the workbook in its printed order — counting, addition sets, addition facts, subtraction sets, subtraction facts, then mixed review — since each section builds on the last (pages 2-19).

Use the color-by-code quilt page as a low-stakes fluency check partway through the subtraction unit (page 15).

The 'Checking Subtraction' page (page 17) is a good moment to introduce the idea that addition and subtraction are inverse operations.

Save the final mixed word-problem page (page 24) for after both addition and subtraction word problems have been practiced separately (pages 20-23).

Addition and subtraction fact fluency within 18 — students solve missing-number and standard equations across multiple practice sets (pages 5-8, 13-16).

Three-addend addition — students add three single-digit numbers in one equation (pages 9-10).

Inverse-operation checking — students subtract, then add to verify their answer (page 17).

Equation evaluation — students judge whether a solved equation is correct and fix it if not (page 18).

Word-problem translation — students read a short story problem and write the matching number sentence to solve it (pages 20-24).