Estimate or Calculate,
then arrange these statements in order of size

Population of the UK
Number of seconds in a week
A thousand squared
Days since 1st January 1
99 x 99 x 99 x 99

• Tam, Sussex PGCE
•
• This one worked really well and got the pupils thinking! I made one change though, which was to change the number of days question to the days from 1500 AD because it was a bit too close to the number of seconds in a week, (700,000 and 600,000 respectively)
• J Hitchcox, Sheldon
•
• I liked this activity as it made the students think.
Interesting some of the answers. Some students have no real value of size. I did not read the January 1st one correctly. I missed the 1 at the end.
• Mr Keir, WHS
•
• Well done Yr 10 Set 3 at Welshpool High School 2011! Jolly Good Show ALL CORRECT!
• Transum,
•
• Just in case you hadn't noticed, the statements above can be dragged up and down the list when you get to the sorting stage. Dealing with such large numbers is a great opportunity to introduce standard form or scientific notation. Calculators may have presented the answers to the calculations in this format. There is a link to the Transum standard form exercises below.

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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 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=September30

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

Transum.org/go/?Num=226

## Curriculum Reference

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

For Students:

For All: