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Count to 20 - Worksheet 10 - Kindergarten

Hard

Extend counting skills from 10 to 20 (Hard)

15 problems · 10-15 minutes · Skills: counting, number recognition

About This Worksheet

This hard-level worksheet contains 15 problems designed for Kindergarten students practicing counting to 20. Hard worksheets feature challenging problems including multi-step questions, missing values, and real-world applications to push students further.

Counting beyond 10 introduces the concept of teen numbers and builds toward understanding place value and two-digit numbers.

  • Count forward from 10 to 20
  • Recognize teen numbers
  • Fill in missing numbers in a sequence
  • Count a set of objects and write the teen number
  • Order numbers 11–20 from least to greatest

How to Solve: Worked Example

Example Problem: 15, ___, ___, 18
Solution Steps:
  1. Count from 15 to 18: 15, 16, 17, 18.
  2. The first blank is 16.
  3. The second blank is 17.
Answer: 16, 17
Tip: When filling in two blanks, count step by step — don't skip ahead!
1
15, ___, ___, 18
2
11, ___, ___, 14
3
17, ___, ___, 20
4
14, ___, ___, 17
5
14, ___, ___, 17
6
12, ___, ___, 15
7
14, ___, ___, 17
8
16, ___, ___, 19
9
16, ___, ___, 19
10
16, ___, ___, 19
11
16, ___, ___, 19
12
12, ___, ___, 15
13
12, ___, ___, 15
14
11, ___, ___, 14
15
12, ___, ___, 15

Answer Key

1. 16, 172. 12, 133. 18, 194. 15, 165. 15, 166. 13, 147. 15, 168. 17, 189. 17, 1810. 17, 1811. 17, 1812. 13, 1413. 13, 1414. 12, 1315. 13, 14

Frequently Asked Questions

How do I download this count to 20 - worksheet 10 worksheet?

Click the "Download PDF / Print" button at the top of the worksheet. You can save it as a PDF or print it directly. The answer key will be on a separate page.

How do I find worksheets at different difficulty levels?

Each subtopic has 10 worksheets: Worksheets 1-3 are Easy, 4-7 are Medium, and 8-10 are Hard. Start with Easy worksheets to build confidence, then progress to harder ones.

What skills does this counting & cardinality worksheet cover?

This worksheet focuses on counting, number recognition. It is designed for Kindergarten students and provides structured practice through varied problem types with a worked example to guide students before they begin.

Can I use this worksheet in my classroom?

Yes. All worksheets on K12Worksheets are free for classroom use. You can print copies for your entire class. With 10 worksheets per subtopic at three difficulty levels, you have plenty of options for differentiated instruction and individualized practice.

How many problems are on this worksheet?

This worksheet contains 15 problems. It typically takes 10-15 minutes to complete. An answer key with all solutions is included so parents and teachers can check work quickly.