Numbers 11–20 Worksheets

Before you begin

Recognize small groups and say counting numbers in order.

Worked example

Count the counters. How many in all? Then write the number as 10 + __.

1. There are 10 in the first row and 10 in the second.
2. 20 = 10 + 10.

Answer: 20; 10 + 10

Check your result using the method in the example before moving to the next question.

Choose your level

These sets use the same exercise types and number ranges across level labels. Choose a fresh set for additional practice.

• Easy: Start with the preview and follow the worked example.
• Medium: Practice the same exercise types with a fresh numbered set.
• Hard: Use another set to practice explaining and checking your answers.

Questions and answer calculations checked on 2026-09-17. How we check worksheets. Free for personal and classroom use.

Preview and print an easy set

Try six questions below, or choose a full set at your level.

Full worksheet sets

Practice next

• Counting Objects
• One-to-One Correspondence
• Counting Forward and Backward