Worksheet BenchK–5 practice for adults supporting learners
Computation practice

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.

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Opens a reproducible 20-question sample in the builder. Adjust it if needed, then choose the worksheet and answer-key PDF package.

Reproducible fixed seeds

Three free worksheet samples

Preview a fixed sample here. Opening one takes that exact seed into the builder, where you can inspect all 20 questions, adjust the settings, and choose a PDF package.

  1. Proof 01 of 03Fixed seed
    Missing Numbers to 20
    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

    This opens the same 20-question seed in the builder. Review the full set, adjust it if needed, then choose a printable PDF package.

    Open sample in builder
  2. Proof 02 of 03Fixed seed
    Missing Numbers to 20
    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

    This opens the same 20-question seed in the builder. Review the full set, adjust it if needed, then choose a printable PDF package.

    Open sample in builder
  3. Proof 03 of 03Fixed seed
    Missing Numbers to 20
    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

    This opens the same 20-question seed in the builder. Review the full set, adjust it if needed, then choose a printable PDF package.

    Open sample in builder

Next step: open a sample in the builder. The fixed seed is preserved until you choose to generate a different set.

Computation routine

Calculate, check, explain.

Read the value and relationship of each number before choosing a symbol or missing value.

  1. 01

    Name the operation and useful number relationships.

  2. 02

    Solve with an efficient written or mental strategy.

  3. 03

    Check the result with the inverse operation or an estimate.

01Problem

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

02 · Answer6
03 · Check

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.

Teacher sequence

Introduce, model, practice, inspect

Move through the sequence vertically. Each step has a distinct classroom decision rather than a hidden swipe panel.

  1. Introduce

    Set one visible purpose

    • Use counters or a number line before moving to symbols alone. For this missing numbers to 20 set, begin without a timer.
  2. Model

    Demonstrate the calculation strategy

    • Read the value and relationship of each number before choosing a symbol or missing value.
  3. Practice

    Assign the focused set

    • 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.
  4. Inspect

    Use errors to choose the next move

    • 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.
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.

System
Common Core
Standard
K.CC.A.2
Match
primary alignment
Reference
Common Core State Standards Initiative — Mathematics Standards
Planning inspection log

Frequently asked questions

Open a row to inspect the guidance most relevant to this worksheet.

  1. What does this Kindergarten Missing Numbers to 20 worksheet practice?
    Finding

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

  2. How should adults use the Missing Numbers to 20 printable?
    Finding

    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.

  3. Does the Missing Numbers to 20 download include answers?
    Finding

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

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Automated QA passedUpdated 2026-07-15

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