Counting patterns within a decade
I can notice the patterns in the numbers when counting up to 100
Counting patterns within a decade
I can notice the patterns in the numbers when counting up to 100
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Lesson details
Key learning points
- You can use the patterns in the one hundred square to help you count to and from 100
- The one hundred square is split into rows and these can help you count.
- All the numbers in a row start in the same way except the decade number at the end.
Keywords
Row - A straight line of numbers, objects etc, arranged horizontally.
Pattern - A repeated arrangement of numbers, colours or shapes which are related to each other in some way or linked by a certain rule.
Decade - A set of 10 numbers, all beginning with the same number of tens, e.g. 20,21…29.
Common misconception
Confusion when counting select rows on a one hundred square, e.g. children may not use the end of the number (the ones) to help them count accurately, or may say the row ending in 40 is the 'forties'.
Label 'decades' throughout the lesson, and model errors in counting within these so that children get used to hearing when the count doesn't sound right.
To help you plan your year 1 maths lesson on: Counting patterns within a decade, download all teaching resources for free and adapt to suit your pupils' needs...
To help you plan your year 1 maths lesson on: Counting patterns within a decade, download all teaching resources for free and adapt to suit your pupils' needs.
The starter quiz will activate and check your pupils' prior knowledge, with versions available both with and without answers in PDF format.
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Explore more key stage 1 maths lessons from the Pattern in counting from 20 to 100 unit, dive into the full primary maths curriculum, or learn more about lesson planning.
Licence
Prior knowledge starter quiz
6 Questions
Q1.Sort these numbers in the order you would say them when counting forwards.
Q2.Sort these numbers in the order you would say them when counting backwards.
Q3.Sort these numbers in the order you would say them when counting forwards.
Q4.Which of the following is a decade number?
Q5.Aisha is counting forwards in tens from 50. Which of the following numbers won't she say?
Q6.Lucas is counting backwards in tens from 70. Which of the following numbers won't he say?
Assessment exit quiz
6 Questions
Q1.Which row of the one hundred square does the picture show?

Q2.Which of these rows from the one hundred square should come first when counting forwards?

Q3.Sort these numbers in the order you would say them when counting forwards along the row of the one hundred square.
Q4.Sort these numbers in the order you would say them when counting backwards along the row of the one hundred square.
Q5.Numbers can be said in different ways. Match the number to the correct way to say it.
20
25
36
Q6.Lucas is counting along one of these rows from the one hundred square. As he counts, he says 4 tens 3. which number is he counting?
