New
New
Year 1

Counting patterns within a decade

I can notice the patterns in the numbers when counting up to 100.

New
New
Year 1

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

  1. You can use the patterns in the one hundred square to help you count to and from 100
  2. The hundred square is split into rows and these can help you count.
  3. All the numbers in a row start in the same way except the decade number at the end.

Common misconception

Confusion at row end, e.g. may think that the row on the 100 square ending in 40 is the forties row.

Draw attention to this through examination of errors.

Keywords

  • Row - a straight line of numbers, objects etc, arranged horizontally.

  • Pattern - a repeated arrangement of numbers, colours, shapes etc which are related to each other in some way or linked by a certain rule.

  • Decade - a set of ten numbers, all beginning with the same number of tens, e.g. 20,21…29.

Teacher tip - provide regular daily opportunities to count to one hundred as a class and as a small group or individual basis. Each morning, you could count along the hundred square and mark it to show how many children are in.
Teacher tip

Licence

This content is © Oak National Academy Limited (2024), licensed on Open Government Licence version 3.0 except where otherwise stated. See Oak's terms & conditions (Collection 2).

Video

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6 Questions

Q1.
Sort these numbers in the order you would say them when counting forwards.
1 - 6
2 - 7
3 - 8
Q2.
Sort these numbers in the order you would say them when counting backwards.
1 - 9
2 - 8
3 - 7
Q3.
Sort these numbers in the order you would say them when counting forwards.
1 - 60
2 - 70
3 - 80
Q4.
Which of the following is a decade number?
6
Correct answer: 60
16
Q5.
Aisha is counting forwards in tens from 50. Which of the following numbers won't she say?
80
Correct answer: 40
70
Q6.
Lucas is counting backwards in tens from 70. Which of the following numbers won't he say?
30
Correct answer: 80
50

6 Questions

Q1.
Which row of the one hundred square does the picture show?
An image in a quiz
Correct answer: the twenties
the thirties
the forties
Q2.
Which of these rows from the one hundred square should come first when counting forwards?
An image in a quiz
the sixties
Correct answer: the fifties
the seventies
Q3.
Sort these numbers in the order you would say them when counting forwards along the row of the one hundred square.
1 - 45
2 - 46
3 - 47
Q4.
Sort these numbers in the order you would say them when counting backwards along the row of the one hundred square.
1 - 27
2 - 26
3 - 25
Q5.
Numbers can be said in different ways. Match the number to the correct way to say it.
Correct Answer:2 tens,20

20

Correct Answer:2 tens 5,25

25

Correct Answer:3 tens 6,36

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?
An image in a quiz
34
Correct answer: 43