Numbers in words – Kindergarten math lesson
Lesson 2 of 10 in the Kindergarten math course
US version. US grades, US spelling and dollars ($). · UK Maths Department
A complete 45-minute lesson for Kindergarten (ages 5–6) that runs on this page – at school or at home. Every answer is graded right away, with a worked explanation.
- Time
- 45 minutes + 15 min homework
- Grade
- Kindergarten (ages 5–6)
- You need
- Paper, a pencil and this page
- Graded
- Instantly, with explanations
For parents: how to use this lesson
You don't need to know this topic yourself. The lesson explains each step on screen, one tidy step at a time. Every answer is graded straight away with a worked explanation, so you never have to grade anything.
- Read what your child will learn and the big ideas together.
- Press Start the lesson below and sit with your child for the teaching and the worked examples (about 19 minutes).
- Let them do the practice on their own. They choose Getting started, On track or Challenge – start on On track and move up after a few right in a row.
- Finish with the exit ticket and the talk question: “How can you tell fourteen and forty apart when you hear them?”
- Later that day or the next day: the homework (15 minutes), then a practice test.
Watch out for
- Mixing up thirteen (13) and thirty (30). Say them slowly: thir-TEEN has a ones part; thir-TY is a whole ten.
- Writing forty as fourty. Remember: four, fourteen, but forty with no u.
Tip for home: Read numbers on signs and prices out loud, and write a few in words together.
What your child will learn
Learning goal: read and write numbers in numerals and in words.
Success looks like
- I can read numbers in words.
- I can write numbers in words.
- I can match numerals and words.
Key words
- numeral
- a number written with digits, such as 42
- digit
- one of the symbols 0 to 9
- hyphen
- a short line joining two words
What to have ready
- Paper and a pencil
- This page on a computer, tablet or phone
- For the hands-on part: Make number cards: numerals on one set and words on another. Play a matching game.
The big ideas (for the adult)
Every number can be written in numerals (like 17) or in words (seventeen).
Numbers from 13 to 19 end in -teen. Tens numbers like 20, 30 and 40 end in -ty.
Two-digit numbers join the tens word and the ones word with a hyphen: forty-two.
The lesson, step by step
| Part | Time | How it is checked |
|---|---|---|
| Starter: quick recall | 5 min | Graded by Classfern |
| Teaching input | 10 min | Not assessed, self-checked |
| Worked examples and guided practice | 9 min | Not assessed, graded by Classfern |
| Independent practice | 15 min | Graded by Classfern |
| Closure and exit ticket | 6 min | Graded by Classfern, self-checked |
Starter, "your turn", practice and exit ticket are graded by Classfern. Worked examples and teaching are not assessed. The hands-on task and the reflection are self-assessed. Explanations in talk are judged by the parent and not recorded.
The lesson
It runs here on the page. No sign-up and no names – progress is kept only in this browser.
Homework and practice at home
15 minutes: 8 practice questions, 3 multiple-choice questions and 2 to remember from earlier work, then a short reflection. New questions every time, all graded instantly.
More practice
More Kindergarten math lessons
Curriculum
Common Core State Standards K.CC.A.3: “Write numbers from 0 to 20. Represent a number of objects with a written numeral 0-20 (with 0 representing a count of no objects).”
Our lessons and questions are our own. They are not written or endorsed by any government department, testing agency or exam board.