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Reasoned Rounding

Four strategy dice games to consolidate pupils' understanding of rounding.

Rough Rectangle

Age 11 to 14 Short Challenge Level:

Answer: 24.75 cm$^2$
 


$5.5\le$ length ("6 cm") $\lt 6.5$


  


$4.5\leq$ width ("5 cm") $\lt 5.5$



$\therefore$ smallest possible area is $5.5\times4.5=24.75$ cm$^2$



 

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