All The Nines

Ms Tayke

Add up all the numbers in the
9 times table.

Include all the multiples up to
ten times nine.

No calculator

 

Boy at desk Boy at desk Boy at desk Boy at desk Boy at desk Boy at desk Boy at desk

What is the most elegant way of doing this task?


Topics: Starter | Arithmetic | Number

  • Geoff Benson, Reading England
  •  
  • Perhaps this should have been worded as the total of the multiples of 9 up to 10 x 9. The total of the numbers in the 9 times table is actually 640. Try it!
  • Best Year 7 Maths Gruop Ever!, King Alfred's College OXON
  •  
  • We thought that the starter today was really easy because we all know the 9 times table and we saw the pattern in it :).
  • Mr Parsons, Ashcroft High
  •  
  • Ryan and Dave got this within half a minute.
  • Destwd, Bratislava
  •  
  • This starter provides opportunity to discuss place value the sum of consecutive numbers, triangular numbers, pair bonds to 9, pair bonds to 10. Not difficult to solve but provides an interesting starter for further discussion.
  • Mrs K, Maths Musketeers
  • Monday, January 18, 2021
  • We thought this was fun. We learned how to add it in a different way.

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Laptops In Lessons

Teacher, do your students have access to computers?
Do they have iPads or Laptops in Lessons?

Whether your students each have a TabletPC, a Surface or a Mac, this activity lends itself to eLearning (Engaged Learning).

Laptops In Lessons

Here a concise URL for a version of this page without the comments.

Transum.org/go/?Start=January18

Here is the URL which will take them to some practice for the quick method.

Transum.org/go/?to=adem

Student Activity

Here is the URL which will take them to Transum's most popular times tables program.

Transum.org/go/?to=TablesMaster

Student Activity



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Transum.org/go/?to=fingers

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Investigate this amazing mind reading performance based on simple mathematical principles.

The short web address is:

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Apple

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