<PRE><B>Question 104029</B>
You need to work out 1/4+1/8+1/2.
The bottom numbers of the fractions (the DENOMINATORS) are 2,4 and 8 and they have an LCM (Lowest Common Multiple or the smallest number that is in EACH of the times tables of 2,4 and 8) of 8.
Since the LCM is 8 change your fractions to eighths and then you can add them together.
1/4 = 2/8 ( 1/4= 1/4*(2/2)= (1*2)/4*2)=2/8 ).

1/8=1/8 (no change needed )

and 1/2 =4/8 ( 1/2=1/2*(4/4)= (1*4)/(2*4)=4/8 ).

So 1/4+1/8+1/2 = (2/8)+(1/8)+(4/8) = 7/8.

And so 7/8ths of a teaspoon are needed.ANS</PRE>