Without using a calculator or paper can you think which of these two expressions has the largest value?

23 x 25

242

Put your left hand up if you think 23 x 25 is the largest.

Put your right hand up if you think 242 is the largest.

## A Mathematics Lesson Starter Of The Day

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Topics: Starter | Mental Methods | Mixed

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• This activity gives the teacher some instant feedback from the class. Who puts their hand up really quickly? Who is more hesitant waiting for other pupils to act first? Who’s facial expression shows the most focussed concentration? Who takes pen and paper to jot down some calculations? Who searches for their calculator? Who changes their mind when the see how the rest of the class are siding? Don’t forget to click the ‘Next’ button above to get a new pair of expressions for your class to ‘take sides’.

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This starter has scored a mean of 3.1 out of 5 based on 218 votes.

Previous Day | This starter is for 29 November | Next Day

282 is the largest.

There is a printable worksheet to go with this activity.

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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=November29

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

Transum.org/go/?to=digivide

For Students:

For All: