Reading and writing numbers to 20
Read and write numerals from 0 to 20
Entire curriculum
1858 concepts · 9 subjects
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Teaching approaches
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2 approaches
Numerals are the symbols 0 through 20. We read the symbol aloud and write the symbol when we hear the number name. Keep digits clear and in the right order for teens.
Spend about 15 minutes reading shown numerals and writing dictated numerals to 20.
Read and write numerals 0–20 and match a counted set to a numeral.
Read and write numerals 0–20 and match a counted set to a numeral.
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Learning resources
Extra practice links — they do not replace Gakuva’s teaching approach.
Illustrative Mathematics · Practice link — not the full lesson
Rainbow Number Line
Before you open · source notes
Learners place numeral cards on a number line while naming and writing numbers. Use it as reading-and-writing practice within 20 with adult support.
Free, no sign-in. A teacher solution is on the same page, so use the student view with your child.
Before you openAsk the learner to read and write two numerals from the line. A completed rainbow does not certify every numeral 0–20.
Opening this link does not save learning or assess mastery.
Source, access and review notes
Public Illustrative Mathematics task page. The .html address responds HTTP 308 to this URL. An anonymous GET of this URL on 2026-11-11 returned HTTP 200 with no login or payment prompt. Where a teacher solution is present, it is on the same page as the student task; this check did not find a separate locked student view. An adult can use the student view section and should not read a solution aloud. Advertising was not observed in the fetched HTML text; that is not a browser, device, or ad-free guarantee. This is a paper or discussion task, not an automatically marked interactive game. Opening the link does not save practice or assess mastery. Diagrams on the page use missing or filename-only alt text, so they are not an accessible image equivalent. Accessibility still depends on an adult describing the picture.
Illustrative Mathematics. “Rainbow Number Line.” Licensed CC BY-NC-SA 4.0. External task; Gakuva does not copy, host, embed, or redistribute it.
CC BY-NC-SA 4.0 — link only
Check understanding
- Read any numeral 0–20 when shown it
- Write numerals 0–20 legibly from dictation
- Represent a number of objects with the correct written numeral
“Can your child read a number like '17' written on paper and write it themselves — and do they know what each digit means?”
Curriculum record
- Type
- Procedural
- Subject
- Mathematics
- Domain
- Number Representation & Place Value
- Age range
- Ages 5–7
Standards