How Do You Do?

123
312
999

Highlight three numbers from those above that add up to 17.

A Mathematics Lesson Starter Of The Day


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Topics: Starter | Arithmetic | Place Value | Problem Solving | Puzzles

  • Transum,
  •  
  • Once pupils have understood the rules of combining digits in this puzzle the next step is to develop some strategies. Click on the button lower down this page to generate another version of this puzzle from random numbers. Even armed with a calculator and paper many pupils will opt for a mental method to home in on the correct answer.
  • Mrs Limestone,
  •  
  • Can you also subtract?

    [Transum: No, addition only. The answer can be seen by teachers lower down this page.]
  • 4G, Epping West
  •  
  • My class says this is impossible to solve! Thank you.

How did you use this starter? Can you suggest how teachers could present or develop this resource? Do you have any comments? It is always useful to receive feedback and helps make this free resource even more useful for Maths teachers anywhere in the world.
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Excellent, I would like to see more like this
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Didn't really capture the interest of the students
Not for me! I wouldn't use this type of activity.

This starter has scored a mean of 3.4 out of 5 based on 114 votes.


Previous Day | This starter is for 9 August | Next Day

 

Answers

1

2

3

3

1

2

9

9

9

Note to teacher: Doing this activity once with a class helps students develop strategies. It is only when they do this activity a second time that they will have the opportunity to practise those strategies. That is when the learning is consolidated. Click the button above to regenerate another version of this starter from random numbers.



Your access to the majority of the Transum resources continues to be free but you can help support the continued growth of the website by doing your Amazon shopping using the links on this page. Below is an Amazon search box and some items chosen and recommended by Transum Mathematics to get you started.

Texas Instruments Nspire Calculator

This handheld device and companion software are designed to generate opportunities for classroom exploration and to promote greater understanding of core concepts in the mathematics and science classroom. TI-Nspire technology has been developed through sound classroom research which shows that "linked multiple representation are crucial in development of conceptual understanding and it is feasible only through use of a technology such as TI-Nspire, which provides simultaneous, dynamically linked representations of graphs, equations, data, and verbal explanations, such that a change in one representation is immediately reflected in the others.

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Apple iPad Pro

The analytics show that more and more people are accessing Transum Mathematics via an iPad as it is so portable and responsive. The iPad has so many other uses in addition to solving Transum's puzzles and challenges and it would make an excellent gift for anyone.

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Before giving an iPad as a Christmas gift you could add a link to iPad Maths to the home screen.

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Online Maths Shop

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=August9

Here is the URL which will take them to an interactive activity involving products.

Transum.org/go/?to=Product

Student Activity

 


Apple

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