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help please
Posted: Mon Nov 21, 2011 7:18 pm
by senthi
the latymer school past paper2005
fran bounces 4 times on the trampoline.every bounce is 1 1/2 times as high as the one before.the first bounce was 2 feet high.
how high was the 3rd bounce?the answer 4 1/2 feet
how high was the 4th bounce? the answer6 3/4 feet
can any one explain the work out please.thank you.
Re: help please
Posted: Mon Nov 21, 2011 7:23 pm
by Guest55
Fran bounces 4 times on the trampoline.every bounce is 1 1/2 times as high as the one before.the first bounce was 2 feet high.
how high was the 3rd bounce?
how high was the 4th bounce?
Second bounce is 1.5 times the first = 1.5 x 2 = 3 feet
So third bounce is 1.5 x 3 = 4.5 feet (sorry decimals are easier to type!)
Fourth bounce = 1.5 x 4.5 etc
Re: help please
Posted: Mon Nov 21, 2011 7:28 pm
by mitasol
every bounce is 1.5 times as high as the one before
first bounce is 2ft
second bounce is 1.5 X 2ft = 3ft
third bounce is 1.5 X 3ft = 4.5ft
fourth bounce is 1.5 X 4.5ft = 6.75 or 6 3/4
edit to add - I'm too slow.
Re: help please
Posted: Mon Nov 21, 2011 7:34 pm
by senthi
thankyou very much
help please
Posted: Mon Nov 21, 2011 7:42 pm
by senthi
the latymer past paper 2005
jane has lots of number 5's and number 4's which she can add together in any way she chooses.circle any numbers below that she cannot make exactly.
11 13 17 18 19
the answer is : 11 is the only one
can anyone explain the work out please.thankyou very much
Re: help please
Posted: Mon Nov 21, 2011 8:09 pm
by Guest55
jane has lots of number 5's and number 4's which she can add together in any way she chooses.circle any numbers below that she cannot make exactly.
11 13 17 18 19
4 times table ....... 4 8 12 16 20 ..... stop when I get beyond 19
add 5 to these 9 13 17 21 ...... ditto
add 10 to them 14 18 22 ...... ditto
Only one I have not made is 11
Re: help please
Posted: Mon Nov 21, 2011 11:48 pm
by senthi
thankyou.