Count groups of ten and extra ones

Maths

In this unit pupils will explore the counting sequence for counting to 100 and beyond and represent the numbers from 20-99 in different ways including marking the position on a number line. They learn to represent 20-99 as a length. In the future unit pupils consolidate their counting across and on from 100. They will learn to represent a three-digit number up to 199 in different ways.

In the prior unit pupils extended their counting to 100 They explored pattern in counting, focused on the end of the decade and the start of the new decade numbers. In this unit pupils will explore the counting sequence for counting to 100 and beyond representing numbers from 20-99 in different ways including marking the position on a number line They will learn to represent 20-99 as a length.

Counting and representing the numbers 20 to 99

Look at the picture and fill in the missing number. There are 7 groups of ten and {{ }} extra ones.

Which Gattegno chart represents the groups of tens and ones shown?

Laura puts the pencils into groups of ten. She has 8 tens and 6 extra ones.  
If they were counted in ones, how many ones would there be altogether?

Which place value chart represents the picture shown?

Match the words to the numerals that have the same value.

Sort these numbers in the order you would say when counting forwards. 

How many tens can you see in the picture?

Which of the following represents the number shown on the Gattegno chart.

Laura has 50 counters. She wants to record this on the place value chart. Which place value chart is correct?

Match the numerals to the words that have the same value.

Starter Quiz