Step-by-step Maths Level 2: Numbers 0 to 20 in words
Part of the Step-by-step Maths Level 2 tens and ones chapter. Chapter overview · whole chapter on one page
Numbers 0 to 20 in words
Every number from 0 to 20 has its own name. Some names are hard to spell, so say them slowly.
The teen numbers 13 to 19 end in -teen. Each one is ten plus some ones.
Key ideas
- Zero to twenty each have a name.
- Thirteen, fourteen ... nineteen end in -teen.
- Twenty is 2 tens.
Method. Say the number name for each numeral from 0 to 20.
- Look at the numeral. It is less than 21.13
- Say its name. Each number from 0 to 20 has its own name.thirteen
- Write the answer. thirteen
Check. Count to 13 and stop on thirteen.
Watch out. Some teen names look alike. Thirteen and thirty are different numbers.
Method. Say the number name and find its numeral.
- Say the number name. Listen to the whole word.nineteen
- Find the numeral. nineteen is the number 19.nineteen = 19
- Write the numeral. 19
Check. Count to 19 and check you say nineteen at the end.
Watch out. Thirteen is 13: the 3 is at the end, as in the ones word.
Method. Say the number name for each numeral from 0 to 20.
- Look at the numeral. It is less than 21.7
- Say its name. Each number from 0 to 20 has its own name.seven
- Write the answer. seven
Check. Count to 7 and stop on seven.
Watch out. Some teen names look alike. Thirteen and thirty are different numbers.
Watch out
Watch out. Fifteen has a letter f, not a v. Count to check the spelling.
Exam tip
Grown-up tip. Write the words on cards and match each card to its numeral. Say the names together.
Exercise 2C Practice: numbers in words
Non-calculatorMethod. Say the number name for each numeral from 0 to 20.
- Look at the numeral. It is less than 21.19
- Say its name. Each number from 0 to 20 has its own name.nineteen
- Write the answer. nineteen
Check. Count to 19 and stop on nineteen.
Watch out. Some teen names look alike. Thirteen and thirty are different numbers.
Method. Say the number name and find its numeral.
- Say the number name. Listen to the whole word.sixteen
- Find the numeral. sixteen is the number 16.sixteen = 16
- Write the numeral. 16
Check. Count to 16 and check you say sixteen at the end.
Watch out. Thirteen is 13: the 3 is at the end, as in the ones word.
Method. Say the number name for each numeral from 0 to 20.
- Look at the numeral. It is less than 21.5
- Say its name. Each number from 0 to 20 has its own name.five
- Write the answer. five
Check. Count to 5 and stop on five.
Watch out. Some teen names look alike. Thirteen and thirty are different numbers.
Method. Say the number name and find its numeral.
- Say the number name. Listen to the whole word.two
- Find the numeral. two is the number 2.two = 2
- Write the numeral. 2
Check. Count to 2 and check you say two at the end.
Watch out. Thirteen is 13: the 3 is at the end, as in the ones word.
Method. Say the number name for each numeral from 0 to 20.
- Look at the numeral. It is less than 21.3
- Say its name. Each number from 0 to 20 has its own name.three
- Write the answer. three
Check. Count to 3 and stop on three.
Watch out. Some teen names look alike. Thirteen and thirty are different numbers.
Method. Say the number name and find its numeral.
- Say the number name. Listen to the whole word.twelve
- Find the numeral. twelve is the number 12.twelve = 12
- Write the numeral. 12
Check. Count to 12 and check you say twelve at the end.
Watch out. Thirteen is 13: the 3 is at the end, as in the ones word.
Method. Say the number name for each numeral from 0 to 20.
- Look at the numeral. It is less than 21.20
- Say its name. Each number from 0 to 20 has its own name.twenty
- Write the answer. twenty
Check. Count to 20 and stop on twenty.
Watch out. Some teen names look alike. Thirteen and thirty are different numbers.
Method. Say the number name and find its numeral.
- Say the number name. Listen to the whole word.four
- Find the numeral. four is the number 4.four = 4
- Write the numeral. 4
Check. Count to 4 and check you say four at the end.
Watch out. Thirteen is 13: the 3 is at the end, as in the ones word.
Method. Say the number name for each numeral from 0 to 20.
- Look at the numeral. It is less than 21.0
- Say its name. Each number from 0 to 20 has its own name.zero
- Write the answer. zero
Check. Count to 0 and stop on zero.
Watch out. Some teen names look alike. Thirteen and thirty are different numbers.
Method. Say the number name and find its numeral.
- Say the number name. Listen to the whole word.one
- Find the numeral. one is the number 1.one = 1
- Write the numeral. 1
Check. Count to 1 and check you say one at the end.
Watch out. Thirteen is 13: the 3 is at the end, as in the ones word.
Method. Say the number name for each numeral from 0 to 20.
- Look at the numeral. It is less than 21.8
- Say its name. Each number from 0 to 20 has its own name.eight
- Write the answer. eight
Check. Count to 8 and stop on eight.
Watch out. Some teen names look alike. Thirteen and thirty are different numbers.
Method. Say the number name and find its numeral.
- Say the number name. Listen to the whole word.ten
- Find the numeral. ten is the number 10.ten = 10
- Write the numeral. 10
Check. Count to 10 and check you say ten at the end.
Watch out. Thirteen is 13: the 3 is at the end, as in the ones word.
Method. Say the number name for each numeral from 0 to 20.
- Look at the numeral. It is less than 21.11
- Say its name. Each number from 0 to 20 has its own name.eleven
- Write the answer. eleven
Check. Count to 11 and stop on eleven.
Watch out. Some teen names look alike. Thirteen and thirty are different numbers.
Method. Say the number name and find its numeral.
- Say the number name. Listen to the whole word.eighteen
- Find the numeral. eighteen is the number 18.eighteen = 18
- Write the numeral. 18
Check. Count to 18 and check you say eighteen at the end.
Watch out. Thirteen is 13: the 3 is at the end, as in the ones word.
Method. Say the number name for each numeral from 0 to 20.
- Look at the numeral. It is less than 21.15
- Say its name. Each number from 0 to 20 has its own name.fifteen
- Write the answer. fifteen
Check. Count to 15 and stop on fifteen.
Watch out. Some teen names look alike. Thirteen and thirty are different numbers.
Method. Say the number name and find its numeral.
- Say the number name. Listen to the whole word.thirteen
- Find the numeral. thirteen is the number 13.thirteen = 13
- Write the numeral. 13
Check. Count to 13 and check you say thirteen at the end.
Watch out. Thirteen is 13: the 3 is at the end, as in the ones word.