Worksheet Bench
KindergartenNumber SenseK.CC.A.2

Missing Numbers to 20 Worksheets for Kindergarten

These missing numbers to 20 worksheets give parents and teachers focused, repeatable practice for Kindergarten learners. Complete forward number sequences from 0 to 20, including sequences that begin above 1. Choose a fixed-seed sample or make a fresh printable without creating an account.

Learning objective: Complete forward number sequences from 0 to 20, including sequences that begin above 1.
Reproducible fixed seeds

Three free worksheet samples

Open a sample to preview all questions, make a fresh version, or download the worksheet and answer key.

Missing Numbers to 20
Sample 1 · Seed leaf-3-k-missing-numbers-to-20-sample-a7
1. Complete the sequence: 8, 7, ___, 5, 4
2. Complete the sequence: 14, ___, 12, 11, 10
3. Complete the sequence: 18, 17, 16, ___, 14
4. Complete the sequence: 10, 9, 8, ___, 6
Open this sample
Missing Numbers to 20
Sample 2 · Seed leaf-3-k-missing-numbers-to-20-sample-m3
1. Complete the sequence: 6, 5, ___, 3, 2
2. Complete the sequence: 10, 11, ___, 13, 14
3. Complete the sequence: 12, ___, 14, 15, 16
4. Complete the sequence: 8, 9, 10, ___, 12
Open this sample
Missing Numbers to 20
Sample 3 · Seed leaf-3-k-missing-numbers-to-20-sample-z9
1. Complete the sequence: 16, 15, ___, 13, 12
2. Complete the sequence: 5, ___, 7, 8, 9
3. Complete the sequence: 4, ___, 6, 7, 8
4. Complete the sequence: 0, ___, 2, 3, 4
Open this sample
One fixed-seed example

How to approach this skill

Problem: Complete the sequence: 8, 7, ___, 5, 4

Answer: 6

Strategy: Read the value and relationship of each number before choosing a symbol or missing value. This example supports the page objective: Complete forward number sequences from 0 to 20, including sequences that begin above 1.

How to use this worksheet

  • Use counters or a number line before moving to symbols alone. For this missing numbers to 20 set, begin without a timer.
  • Ask for a short explanation of how the learner knows which number is greater. Regenerate only when the learner is ready for another arrangement of the same objective.

Begin with the easy setting when the strategy is new, use standard for independent practice, and reserve challenge for a learner who can explain the method accurately.

Common mistakes to watch

  • Comparing the shape of digits instead of their numerical value. Watch for this specifically during missing numbers to 20 practice.
  • Treating a number sequence as memorized words without noticing its structure. Use the worked correction as the next teaching example.

Use the answer key to find a pattern, then ask the learner to explain one corrected example rather than repeating an entire set immediately.

Standards reference

Skill alignment

Alignment labels identify the primary skill practiced. A worksheet is supplemental practice and does not assess every part of a standard.

Planning help

Frequently asked questions

What does this Kindergarten Missing Numbers to 20 worksheet practice?

Complete forward number sequences from 0 to 20, including sequences that begin above 1.

How should adults use the Missing Numbers to 20 printable?

Start with one untimed set, review the learner's strategy, and use the answer key to discuss errors. Generate a new fixed-seed set only after the current skill is understood.

Does the Missing Numbers to 20 download include answers?

Yes. The free PDF can include an appended answer key, or the answer key can be downloaded separately for adult use.

Related worksheets

Free Kindergarten Math Worksheets

Browse free Kindergarten math worksheets organized by skill, with reproducible samples, customizable printables, and separate answer keys.

Free K–5 Number Sense Worksheets

Browse free K–5 number sense worksheets for Kindergarten, 1st Grade, 2nd Grade, 4th Grade, 5th Grade, then customize problem count, print size, paper, and answer keys.

Counting Objects to 20 Worksheets for Kindergarten

Generate free Kindergarten counting objects to 20 worksheets with three reproducible samples, printable PDFs, and answer keys.

Before, After, and Between Numbers Worksheets for Kindergarten

Generate free Kindergarten before, after, and between numbers worksheets with three reproducible samples, printable PDFs, and answer keys.

Automated QA passed · Updated 2026-07-15

How quality checks work