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What's next?

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This task is about number patterns.

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Write down the next two numbers for each of these patterns.
 
a)  800, 400, 200, 100, 

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b)  90, 75, 60, 45, 

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c)  128, 64, 32, 16, 8, 

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d)  243, 81, 27, 9, 

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e)  900, 780, 660, 540, 

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f)  1000, 875, 750, 625, 

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g)  4196, 1024, 256, 64, 
Task administration: 
This task can be completed online and has auto marking displayed to students.
Level:
4
Description of task: 
Students write the next two numbers in each of several number patterns.
Learning Progression Frameworks
This resource can provide evidence of learning associated with within the Mathematics Learning Progressions Frameworks.
Read more about the Learning Progressions Frameworks.
Answers/responses: 

  

Y8 (09/2000)

a) 50, 25 very easy
b) 30, 15 very easy
c) 4, 2 very easy
d) 3, 1 easy
e) 420, 300 easy
f) 500, 375 moderate
g) 16, 4 difficult
Diagnostic and formative information: 
 

Common error

Likely reason

f)

500, 475

Subtraction error. Does not rename the hundreds.