Question on lot sizes listed in MT4

I think I made a mistake on my 1st trade.

Signed up for a demo micro accuont.

Lot sizes shown are

0.01
0.02
0.03
0.04
0.05
0.06
0.07
0.08
0.09
1
2
3
4
5
6
7
8

I assumed that 10 micro lots would be “1” but seeing the profit/loss fluctuate so much over just a couple of pips makes me beleive I’m wrong. I gues “1” is actually 1 standard lot or 100 micro lots and so I will need to type in 0.1 to if i’d like 1 mini lot?

thanks

That is correct.