it s ok! it is hard to put it on here too!

and does not help when I make a mistake!

you need to convert g to mg

your sum is 0.5 mg and you need to work out how many grams this is
if 0.1g= 100 mg then 0.5g = 500mg, do you see?

It's tough to get your head around at the start

I'll give you another remember this 0.1g=100mg

0.9g and you want to convert to mg, what's the answer? how many milligrams (mg) is o.9 grams (g) equal to ?

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