Number Words to 100
Read and write numbers to at least 100 in words
What a learner can do afterwards
- 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
The lesson
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.
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.
When a number passes one hundred, write one hundred first, then and, then the rest. The number 103 becomes one hundred and three.
Join a decade word and a small word with a hyphen, like seventy-four, and after 100 add and, like one hundred and three.
Watch it
Where it sits
This opens up
Where this leads
Jobs that lean on this skill. Follow one to see everything it is built on.
8 questions wait behind this lesson, each with its answer explained. Every answer feeds the sky: stars light as they are learned, and dim when it is time to come back.