International Maths Olympiad Forum By SOF Olympiad Trainer - Page 587

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Subject :IMO    Class : Class 6

Ans 1:

Class : Class 8

Ans 2:

Class : Class 6
Seriously

Ans 3:

Class : Class 7
Exactly….Archita

Ans 4:

Class : Class 8
The answer must be B)4900 because 7268-2427 = (estimated form) 7300-2400=4900

Ans 5:

Class : Class 8
7268 - 2427 is in bracket . This means first to do subtraction and then estimate the answer to nearest hundreds ...........TRICKY question

Ans 6:

Class : Class 7
first we will do subtraction of 7268 and 2427 that is 4841 then we will estimate 4841 by nearest 100 which is 4800 and the anser is this first i have also done it according to NCERT but when result came then it was this solution

Ans 7:

Class : Class 6

Ans 8:

Class : Class 6
The answer is A not B

Ans 9:

Class : Class 7
it should be 4900 as we estimate first than subtract

Ans 10:

Class : Class 10
4900 should be the answer as we have to estimate first

Ans 11:

Class : Class 8
guys don't fight people just misunderstood the question also me I got it wrong i put 4800 as i did estimate first then subtract i guess all of us will learn from our mistakes

Ans 12:

Class : Class 6
it is simple 7268 - 2427 = 4841 rounded to the nearest hundreds = 4800

Ans 13:

Class : Class 6

Ans 14:

Class : Class 10
It generally mentioned clearly what to do first, the actual subtraction or the estimation by SOF. But here, they asked us to estimate 7268-2427. So,we should first do the actual subtraction. By that the answer is 4800.

Ans 15:

Class : Class 8
As there is a bracket, it means that we have to find the difference and then estimate the number.

Ans 16:

Class : Class 4
it means first do subtraction and then estemate

Ans 17:

Class : Class 6
estimate and then subtract

Ans 18:

Class : Class 8
WHAT IS THE USE OF ESTIMATING IF WE ARE DOING THE NORMAL SUBTRACTION. THE ANSWER SHOULD BE 4900 AS THE NUMBER 7268 ESTIMATED TO THE NEAREST IS 7300 AND THEE NUMBER 2427 ESTIMATED TO THE NEAREST HUNDRED IS 2400. 7300-2400=4900

Ans 19:

Class : Class 7
We have 7268 – 2427 = 4841 Rounded off 4841 to nearest hundred = 4800

Ans 20:

Class : Class 7

Ans 21:

Class : Class 7
first we should subtract and than estimate

Ans 22:

Class : Class 6
because it is in bracket , we must subtract and then we must round off to nearest hundred

Ans 23:

Class : Class 6
if we apply BODMAS on this question, it says to solve the brackets first...

Ans 24:

Class : Class 6
SUBTRACT AND THE ESTIMATE !!!

Ans 25:

Class : Class 7

Ans 26:

Class : Class 9
the ans is 4800

Ans 27:

Class : Class 8
sorry i meant 4900

Ans 28:

Class : Class 6

Ans 29:

Class : Class 7
What is the point in estimating if we are anyway doing the actual subtraction? It makes sense if we round off the numbers 7268 and 2427 to the nearest hundred and then subtract, but that gives 7300-2400 viz.4900

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Subject :IMO    Class : Class 8

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Subject :IMO    Class : Class 4

Ans 1:

Class : Class 4
D. 80.5

Ans 2:

Class : Class 8
The answer made by me was the same.The answer in the book is 57.50

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Subject :IMO    Class : Class 9

Ans 1:

Class : Class 9
you are taking out average but if you tell you are a girl then you should know the answer

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Subject :IMO    Class : Class 9

Ans 1:

Class : Class 10
1:2 because lets take no. of boys as x then 70x will be total marks of boys lets take girls as y then 73y will be no of total marks of girls then 71x+71y will be equal to the total marks of whole class then we can say that 70x+73y=71x+71y it gives us x=2y so ratio will be 1:2

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Subject :IMO    Class : Class 5

Ans 1:

Class : Class 6
The answer for this question is b and not d as boiled egg=20, Sandwich=25 and Parantha=20

Ans 2:

Class : Class 5
b

Ans 3:

Class : Class 3
B is the correct ans

Ans 4:

Class : Class 8
d

Ans 5:

Class : Class 8
d

Ans 6:

Class : Class 7
B is the correct answer

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Subject :IMO    Class : Class 4

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Subject :IMO    Class : Class 4

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Subject :IMO    Class : Class 3

Ans 1:

Class : Class 8
257

Ans 2:

Class : Class 4
B

Ans 3:

Class : Class 3
BBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBB BBBBBBBBBBBBBBBBBBBBBBBBBBBBBB

Ans 4:

Class : Class 9
B,257

Ans 5:

Class : Class 8
B

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Subject :IMO    Class : Class 3

Ans 1:

Class : Class 4
bruh easywho ever answer it wrong they are dumb

Ans 2:

Class : Class 5

Ans 3:

Class : Class 8
A

Ans 4:

Class : Class 4
D

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