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Primary 3 | Maths
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Please help me, is this Guess and check?
Date Posted: 5 years ago
Views: 472
For p3, it's best to stick to guess and check as I think assumption is not taught yet. (I'm not clear with MOE syllabus)
Can you show me how to do Guess and check please? Thank you
I only learn assumption method when primary 4
For me, I learnt during p3
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Assumption method used; guess and check works too
Date Posted:
5 years ago
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Assumption method
Date Posted:
5 years ago
Can you show me the Guess and check method I can’t use assumption as I’ve not learn it yet
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Hope this helps.
I start with almost equal no. Of tables and stools 12 and 13. After the 1st try, i realise that the total 87 legs is greater than the 80 legs we need. So i decrease the no. Of tables which has more legs by one to 11 tables.
After the 2nd try, i see that the total no. Of legs is now 86 (1 less than on the 1st try). So i know that by decreasing the no. Of tables by one, the total no. Of legs will decrease by one.
To get 80 legs i need to decrease 86 by 6, so i decrease the no. Of tables by 6 to be 5 tables on the 3rd try. This gives me the correct total of 80 legs.
I start with almost equal no. Of tables and stools 12 and 13. After the 1st try, i realise that the total 87 legs is greater than the 80 legs we need. So i decrease the no. Of tables which has more legs by one to 11 tables.
After the 2nd try, i see that the total no. Of legs is now 86 (1 less than on the 1st try). So i know that by decreasing the no. Of tables by one, the total no. Of legs will decrease by one.
To get 80 legs i need to decrease 86 by 6, so i decrease the no. Of tables by 6 to be 5 tables on the 3rd try. This gives me the correct total of 80 legs.
Date Posted:
5 years ago
Thank you so much!
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Guess and check
Date Posted:
5 years ago
Thank you !
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