Maths year 11

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    (Original post by z_o_e)
    How do I do Q2?

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    You'd get the greatest area by considering the upper bounds of the two sides.
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    (Original post by RDKGames)
    You'd get the greatest area by considering the upper bounds of the two sides.
    So 12.5+11.5



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    (Original post by z_o_e)
    So 12.5+11.5



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    Of course not. You don't add the two numbers for an area of a rectangle, silly!
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    (Original post by RDKGames)
    Of course not. You don't add the two numbers for an area of a rectangle, silly!
    Omg I multiply them!!!

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    (Original post by RDKGames)
    Of course not. You don't add the two numbers for an area of a rectangle, silly!
    Omg. Could you please do a demonstration on multiplying decimals.

    I forgot the column method .
    I always use a calculator! !

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    (Original post by z_o_e)
    Omg. Could you please do a demonstration on multiplying decimals.

    I forgot the column method .
    I always use a calculator! !

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    It's the same way as multiplying something by 245 where you split it into 200, 40 and 5 but if it's 2.45 then you split it into 2, 0.40 and 0.05.
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    (Original post by RDKGames)
    It's the same way as multiplying something by 245 where you split it into 200, 40 and 5 but if it's 2.45 then you split it into 2, 0.40 and 0.05.
    I forgot how to multiply! By written methods. I'm getting them wrong.

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    (Original post by z_o_e)
    I forgot how to multiply! By written methods. I'm getting them wrong.

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    Show me how you would multiply something like 123 * 456 and I'll tell you how to adapt it to decimals
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    (Original post by RDKGames)
    Show me how you would multiply something like 123 * 456 and I'll tell you how to adapt it to decimals

    I tried all the methods I knew!

    I think I need to work on my multiplication.
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    (Original post by z_o_e)
    I tried all the methods I knew!

    I think I need to work on my multiplication.
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    To do 123 x 456 you can do (100+20+3)(400+50+6) and expand brackets as you normally would.
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    (Original post by z_o_e)
    I tried all the methods I knew!

    I think I need to work on my multiplication.
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    How about this: remember when you converted decimals into fractions? You can do the same thing here! 12.5=12.5/1=125/10 and 11.5=115/10

    Then it simply becomes 125/10 * 115/10 which you can do.

    Otherwise, I'd find the table method much more straight forward.
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    (Original post by RDKGames)
    How about this: remember when you converted decimals into fractions? You can do the same thing here! 12.5=12.5/1=125/10 and 11.5=115/10

    Then it simply becomes 125/10 * 115/10 which you can do.

    Otherwise, I'd find the table method much more straight forward.
    Could you do an example of this on paper please?

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    (Original post by z_o_e)
    Could you do an example of this on paper please?

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    What method do you prefer column or table?

    Isn't Column easier? I find it hard but the table method takes too long

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    (Original post by z_o_e)
    What method do you prefer column or table?

    Isn't Column easier? I find it hard but the table method takes too long

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    I don't have a preference as they mean the same thing to me in terms of difficulty aha. Just pick whichever one you'd most comfortable with using.
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    I did it like this.. I took the decimals out.
    But my final answer can move the two decimal places into the final answer.

    But I got it wrong

    I did it on my whiteboard and I got it right.


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    (Original post by RDKGames)
    I don't have a preference as they mean the same thing to me in terms of difficulty aha. Just pick whichever one you'd most comfortable with using.
    I find column confusing tbh

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    Ohhh I was suppose to add the lines downwards




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    (Original post by RDKGames)
    How about this: remember when you converted decimals into fractions? You can do the same thing here! 12.5=12.5/1=125/10 and 11.5=115/10

    Then it simply becomes 125/10 * 115/10 which you can do.

    Otherwise, I'd find the table method much more straight forward.
    Here I did question 3



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    How would I do question 4 though?


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