Missing numbers in this sequence?

The numbers in this sequence increase by the same amount each time. the sequence is 11, ---, ---,35. what are the missing numbers?

Answers
If we add 8 to 11 we get 29 which is the first missing number.
chloe
10 March 2011
There are two missing numbers and therefore 3 steps of addition that we have to take to get from 11 to 35. The difference between 35 and 11 is 24 so if we divide 24 by 3 we get 8, this is our common difference of the sequence.
chloe
10 March 2011
adding 8 to 27 gets us to 35 so we know for sure that the common difference between each term is 8
chloe
10 March 2011
then if we add 8 to 19 we get 27 which is the second missing number
chloe
10 March 2011
sorry, if we add 8 to 11 we get 19 which is the first missing number
chloe
10 March 2011
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