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Maths
Counting in tens - decade numbers
Starter quiz
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Laura is counting forwards in tens from 20. Which are the next numbers she will say?
10, 0.
20, 40, 50.
30, 40, 50. ✓
I am counting backwards in tens from 40. Which number will I say next?
50
30 ✓
20
Which of these counting sequences is correct when counting forwards in tens?
10, 20, 30, 50.
20, 30, 40. ✓
50, 40, 30.
Which of these counting sequences is correct when counting backwards in tens?
50, 40, 30, 10, 0.
40, 30, 20, 10, 0. ✓
50, 40, 20, 10.
Put these decade numbers in the order you would say them when counting forwards.
1
⇔
20
2
⇔
30
3
⇔
40
Put these decade numbers in the order you would say them when counting backwards.
1
⇔
40
2
⇔
30
3
⇔
20
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