Subtraction Facts to 20 Worksheets for 1st Grade

What your child practices

This set of 50 worksheets on Subtraction Facts to 20 is written for 1st grade (Grade 1 in Canada) and gives your child 1400 questions to work through, one page at a time. In the early grades, number sense grows through lots of short, hands on practice, and Subtraction Facts to 20 is one of the building blocks teachers return to all year. Each of the 50 versions of Subtraction Facts to 20 has new questions, so your child can repeat the skill without memorizing answers. Each sheet supports Common Core 1.OA.C.6, covering operations and algebraic thinking: adding, subtracting, multiplying and dividing to solve problems. In Canada it matches the BC curriculum for Grade 2. Every PDF prints on US letter paper, with the answer key on page 2 for quick checking. New to the idea? Watch the Subtraction Facts to 20 video lesson, then print a sheet while it is fresh.

Tips for parents

• Keep counters, blocks or fingers nearby. Young children learn numbers best when they can touch them.
• Keep finished sheets in a folder so your child can see progress across the week.
• Do one sheet, check it with the answer key, then redo only the missed problems the next day.