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Maths
Pattern in counting from 20 to 100
Starter quiz
Try it
Give to class
When does the pattern of counting change when counting backwards?
when you cross the tens boundary ✓
when you count the forties
I'm thinking of a number. It is in the fifties and ends in 6. What is my number?
65
56 ✓
506
Sort these numbers in the order you would say them if counting forwards.
1
⇔
5 tens 7
2
⇔
5 tens 8
3
⇔
5 tens 9
4
⇔
6 tens
Lucas counts backwards from the number 76. What numbers will he say next?
75, 74, 73 ✓
77, 78, 79
When counting forwards from 34, which of these numbers will you say?
29
43 ✓
34
When counting backwards from 34, which of these numbers will you say?
29 ✓
35
43
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