Missing Numbers to 20 Worksheets for Kindergarten

What your child practices

This set of 50 worksheets on Missing Numbers to 20 is written for kindergarten and gives your child 600 questions to work through, one page at a time. In the early grades, number sense grows through lots of short, hands on practice, and Missing Numbers to 20 is one of the building blocks teachers return to all year. Each of the 50 versions of Missing Numbers to 20 has new questions, so your child can repeat the skill without memorizing answers. Each sheet supports Common Core K.CC.A.2, covering counting, knowing number names and comparing numbers. In Canada it matches the BC curriculum for Grade 1. Answer keys sit on page 2 of each PDF, so checking takes seconds. New to the idea? Watch the Missing Numbers 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.
• Ask your child to explain one answer out loud. Talking through Missing Numbers to 20 shows you where the thinking is solid.
• Set a timer for ten minutes and stop when it rings. Short, regular practice beats one long session.