488g

276g

6804g

9891g

?

The weight of a cuboid depends on its colour. What is the weight of the four cuboids, one of each colour, on the scales immediately above? No calculators allowed!

## A Mathematics Lesson Starter Of The Day

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Topics: Starter | Algebra | Arithmetic | Problem Solving

• The Best Maths Class Ever 7cd/m2, King Alfreds, Oxfordshire, Wantage
•
• We all found the first two quite BORING because they were too easy but We all found the 3rd one very hard. The last one was a bit hard. Louis, Liam, Jasper and Sir all got the 3rd one right. Everyone got the 1st and 2nd right.
• Mrs Tanner, Darrick Wood Junior School
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• We used it as a revision for chunking. We all felt confident with the bus stop method so we had stopped thinking about chunking for larger numbers.
• Year 6, Brookfield Primary Langwith Junction
•
• We thought this was difficult until we thought about it, and then found them quite easy. DO NOT be defeated by BIG numbers!!!!
• Transum,
•
• This Starter was updated in 2014. The original activity involved slightly larger numbers. The comments above refer to that previous version of this starter which you can find below as the extension activity.

This is another one of those starters that doesn't seem particularly interesting, puzzling or funny but it is part of the range of activities pupils should participate in. Your main lesson theme for today might be on geometry but it is so important to keep those vital numeracy skills well practised. When did your pupils last do this kind of calculation without a calculator?

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.

If you don't have the time to provide feedback we'd really appreciate it if you could give this page a score! We are constantly improving and adding to these starters so it would be really helpful to know which ones are most useful. Simply click on a button below:

Excellent, I would like to see more like this
Good, achieved the results I required
Satisfactory
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 3.0 out of 5 based on 224 votes.

Previous Day | This starter is for 18 June | Next Day

244g + 69g + 1134g + 1099g = 2546g

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.

## Extension

The Starter above was redesigned in 2014. The original starter contained some slightly larger numbers:

1184 ÷ 8

1605 ÷ 15

783 ÷ 27

10752 ÷ 384

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.

For the young people in your life it is a great investment. Bought as a gift for a special occasion but useful for many years to come as the young person turns into an A-level candidate then works their way through university. more...

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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Click the images above to see all the details of these items and to buy them online.

 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).

Transum.org/go/?Start=June18

Here is the URL which will take them to a related student activity.

Transum.org/go/?to=division

The answer to the extension activity is 148 + 107 + 29 + 28 = 312

## Curriculum Reference

See the National Curriculum page for links to related online activities and resources.

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