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
1 · Read
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.
More to read
Finding Place Value (ones, tens, hundreds) and Place Value Patterns with Instruments
Number words are secret codes for digits. Fifty-seven splits into fifty, which means 5 tens, and seven, which means 7 ones. Put them together and you get 57. Watch out for tricky pairs: forty is 4 tens, but fourteen is 1 ten and 4 ones. Say each word slowly and ask which pile of tens it names.
Understand Place Value, Make a Number Worksheet
Turning words into numerals is like following a recipe. Eighty-three gives eighty for the tens pile and three for the ones pile, so write 8 then 3. If a word like forty has no ones part, park a zero in the ones place to hold the spot. Cover the numeral, read the words, and write the digits from the sounds.
1.1 Introduction to Whole Numbers
Decade words are the flags of the tens road: twenty, thirty, forty, fifty, sixty, seventy, eighty, ninety. Each flag plants a digit in the tens place with a zero beside it. Sixty means 6 tens and 0 ones, written 60. March along the flags in order and shout each numeral as you pass its flag.
2 · Watch
En anglaisTake it off screen
Where it sits
This opens up
Where this leads
Jobs that lean on this skill. Follow one to see everything it is built on.
17 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.