---
title: "Number Words to 100"
description: "Read and write numbers to at least 100 in words"
canonical: https://lightmysky.com/learn/mathematics/number-words-to-100-mt_76SPWvdI7r
source: https://lightmysky.com/learn/mathematics/number-words-to-100-mt_76SPWvdI7r.md
retrieved: 2026-10-19
---

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# Number Words to 100

Read and write numbers to at least 100 in words

Subject: Mathematics · Area: Number Representation & Place Value · Ages 6 to 7
Page: https://lightmysky.com/learn/mathematics/number-words-to-100-mt_76SPWvdI7r

## Ready when they can

- Read 'fifty-seven' and write the numeral 57
- Write 'eighty-three' when shown the numeral 83
- Read and write all decade words (twenty, thirty … ninety) correctly

## Lesson: Writing number words past twenty

You already know the words for numbers up to twenty. To write bigger numbers, join a decade word with a small word. The decade words are twenty, thirty, forty, fifty, sixty, seventy, eighty, and ninety. Put the two words together with a hyphen, like fifty-seven.

*(drawing: These are the decade words. Each one names a group of ten, from 20 to 90.)*

**Example.** Priya has 83 stickers. She looks at the 8 and thinks eighty. She looks at the 3 and thinks three. She joins them with a hyphen: eighty-three.

**Tip.** When a number passes one hundred, write one hundred first, then and, then the rest. The number 103 becomes one hundred and three.

**Recap.** Join a decade word and a small word with a hyphen, like seventy-four, and after 100 add and, like one hundred and three.

## Practice

17 questions on this page, each with its working shown.

## Needs first

- [Number Words to Twenty](https://lightmysky.com/learn/mathematics/number-words-to-twenty-mt_9IzhGUZ30z)
- [Reading and writing numbers to 100](https://lightmysky.com/learn/mathematics/reading-and-writing-numbers-to-100-mt_x8TshvbbQT)

## Opens up

- [Reading and writing numbers to 1000](https://lightmysky.com/learn/mathematics/reading-and-writing-numbers-to-1000-mt_VFsuftfvYM)