Part (i): To derive the equation, should elaborate, on what basis you know that the 2 expressions are equal. The explanation to solve the equation is clear (the balancing).

Part (ii): You could have add on 'facts' like area of rectangle is length x breadth, that would explain why you say area of rectangle is 23 times 10. The unit "cm^2" should be read as "square centimetre".

Part (iii): The conversion steps are very clearly written and explained. Well done :)

Part (i): To derive the equation, should elaborate, on what basis you know that the 2 expressions are equal. The explanation to solve the equation is clear (the balancing).

ReplyDeletePart (ii): You could have add on 'facts' like area of rectangle is length x breadth, that would explain why you say area of rectangle is 23 times 10. The unit "cm^2" should be read as "square centimetre".

Part (iii): The conversion steps are very clearly written and explained. Well done :)