Counting forwards and backwards in 10s to 50 | Maths | Quizalize & Oak National Academy

Starter quiz

Which of these picture shows 10 objects?
What number do the fingers represent?

10

9 ✓

5

4
Which number will come next when counting forwards?

7

5

9 ✓
When counting these numbers backwards, which will you say first?

7 ✓

4

5

6
Put these numbers in the order you would say when counting forwards.

1

⇔

4

2

⇔

5

3

⇔

6

4

⇔

7
Put these numbers in the order you would say them when counting backwards.

1

⇔

8

2

⇔

7

3

⇔

6

4

⇔

5

Which of the following is not a decade number?

50

30

15 ✓
Andeep is counting forwards in tens. What is the next number he will say?

20

30 ✓

40
I want to count forwards in tens starting from 30. What is the next number I will say?

20

40 ✓

30
Laura is counting backwards in tens. What mistake has been made?

She said the numbers in the wrong order.

A number has been missed out. ✓

She muddled up the teens and the decade numbers.
Put these numbers in the order you would say when counting forwards in tens.

1

⇔

20

2

⇔

30

3

⇔

40
Put these numbers in the order you would say when counting backwards in tens.

1

⇔

40

2

⇔

30

3

⇔

20

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May confuse decade number names with teen numbers e.g. thirteen, thirty.

Regular identification and discussion of common errors with opportunities to correct them within this lesson can be replicated beyond it.

Number names 10 to 50 - E.g. 'ten' for 10
Decade numbers - These are the multiples of ten which mark the tens boundary where the pattern of counting changes.