Serial Dilutions Practical AS Biology

Please could someone help me check my answers for these serial dilutions!

I'm working on page 18 of this document:
https://thiacin.co.uk/wp-content/uploads/2017/12/AS-Maths-Solutions.pdf

And I think I've managed question 1 (although there are no answers to check!), I removed 1cm3 from the stock solution each time (and started with 9cm3 of distilled water in all test tubes to begin with)- so each test tube was diluted by a factor of 10- converting 75 mol dm-3 to 0.075 mol dm-3, is this right?

And then question 2, would it be correct to start with 9cm3 of distilled water in all tubes, and then add 0.1cm3 of the previous solution to each test tube? This would change the concentration from 1025 to 0.001025?

And what is the dilution factor each time and overall? I'd say the first one is 10 each time and 1000 overall, and for question 2 would it be 100 each time and 1000000 overall?

Thanks for anyone who can help me clarify these :smile:

EDIT: and for 'Fully describe how you would dilute a 35% solution of glucose by a factor of 2'
Could I say to add 5cm3 of the glucose solution to 5 cm3 of water? This way it is diluted from 0.35 to 0.0175?