I've been going through past papers doing questions and I've noticed that if I do each step manually, I get an answer that's a little off and not accepted in the mark scheme.
Example 1
Here is a list of the ingredients needed to make lentil soup for 6 people. Lentil Soup (for 6 people) 120 g lentils 300 g carrots 800 ml vegetable stock 3 onions Jenny wants to make lentil soup for 24 people.
So if I do 800/6, that gives me 133.3ml. Then doing 133.3x24, it gives me 3199.2.
According the the mark scheme, the answer is actually 3200 and 3199.2 won't be accepted.
Example 2
Lizzy drove by car to visit her aunt. She left home at 930 am. Lizzy arrived at her aunt’s house at 1115 am. She drove a distance of 140 km. Work out, in km/h, Lizzy’s average speed for the journey.
I did 140/105 which gives me 1.3km/min, so 60x1.3 is 78mph. But if I do 140/105x60, I get 80. 80 is the only answer the scheme accepts.
So what's going on and is there a way to fix this problem with the FX-83GT Plus? Or do I have to remember to do it all in one calculation?