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.
Open a sample to preview all questions, make a fresh version, or download the worksheet and answer key.
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.
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.
Use the answer key to find a pattern, then ask the learner to explain one corrected example rather than repeating an entire set immediately.
Alignment labels identify the primary skill practiced. A worksheet is supplemental practice and does not assess every part of a standard.
Complete forward number sequences from 0 to 20, including sequences that begin above 1.
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.
Yes. The free PDF can include an appended answer key, or the answer key can be downloaded separately for adult use.
Browse free Kindergarten math worksheets organized by skill, with reproducible samples, customizable printables, and separate answer keys.
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.
Generate free Kindergarten counting objects to 20 worksheets with three reproducible samples, printable PDFs, and answer keys.
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