Snapshot
Read the question before the data. The stem tells you which cells matter and which cells are there to slow you down.
The five-step method
Use the same sequence on every item:
1. Read the stem and answer options.
2. Identify the relevant data and mentally block out the rest.
3. Decide whether exact calculation or estimation is enough.
4. Choose the shortest method.
5. Calculate, then match the result to the options.
This order matters. If you start with the table, every row looks equally important. If you start with the stem, the table becomes a search area. The answer options also carry useful information. Wide-spaced options invite estimation. Tight options demand exact work. Options with different units tell you which conversion is being tested.
What to underline mentally
The stem usually contains four control words:
- •entity: country, department, category, year, product
- •metric: revenue, staff, emissions, budget, passengers
- •relation: increase, share, ratio, average, projection
- •unit: euros, millions, tonnes, people, percentage, index
If any of the four is missing from your mental setup, do not calculate yet.
Example without solving
Question: Based on the table above, what was the percentage increase in solar capacity in Region B between 2021 and 2023?
Setup:
- •entity: Region B
- •metric: solar capacity
- •relation: percentage increase
- •unit: percentage
- •relevant cells: Region B, solar, 2021 and 2023
- •formula: (2023 - 2021) / 2021 x 100
Only after this setup should calculation start.
Practice drill
For 20 questions, do only setup. No arithmetic. Write the formula and relevant cells. Then compare with the explanation. This trains the part of the exam that causes most wrong answers.