Half A Dozen

Without using a calculator evaluate:

2.2 + 2.5 = 4.7

3 x 2.1 = 6.3

6.2 - 2.6 = 3.6

16.3 + 2.41 = 18.71

19.54 - 17.6 = 1.94

195 ÷ 5 = 39

A Mathematics Lesson Starter Of The Day


Topics: Starter | Arithmetic

  • 7C, Aylesbury High School
  • The question 9.87 - 8.5 has been mis typed in the answer section ... it shows 8.87 - 9.5 .

    Please correct!!!

    [Thanks 7C, the correction has been made - Transum]
  • Mr B, Devon
  • Is it possible to put the previous day and next day links at the top of the page, sometimes you have to scroll down a long way to find them because of all the comments. This would make navigating the site a lot quicker as not all of the starters are suitable for my classes. Thanks.

    [There are now previous day and next day buttons at the top of this panel. Hope that helps. Thanks for the suggestion. Transum]
  • Eliot - Year 6, Charnwood Primary School - Lichfield
  • Some challenging questions but they could be more difficult by having more decimal places.
  • Transum,
  • Not the most exciting Starter of the year but a very important one nevertheless. Regular arithmetic is vital to keep the skills sharp. If you hadn't realised it already every time this page is loaded a new of questions is presented so you can this page on more than one occasion.

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This starter has scored a mean of 3.0 out of 5 based on 789 votes.

Previous Day | This starter is for 10 November | Next Day



2.2 + 2.5 = 4.7

3 x 2.1 = 6.3

6.2 - 2.6 = 3.6

16.3 + 2.41 = 18.71

19.54 - 17.6 = 1.94

195 ÷ 5 = 39

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.

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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.


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


Student Activity



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