Have a look at the ACCA Formula Sheet given in the exam.
And then have a look through the textbook to see what is not on the sheet. There are a lot not given that you have to know: ROI = (Net Profit / Cost of Investment) x 100. Gross Profit Margin = (Revenue – Cost of Goods Sold) / Revenue x 100. Efficiency, liquidity, investor ratios like: Debt-to-Equity Ratio = Total Liabilities / Shareholders’ Equity. EPS = (Net Income – Dividends on Preferred Stock) / Average Outstanding Shares. Etc …