📊 Data Analysis
Growth rates, shares, how-many-times-bigger: the number work that fills reports and aptitude tests. The real skill is knowing when to estimate instead of grinding out an exact answer, and these drills build that instinct.
Growth Rate Calculation →
Growth rate is the change divided by the starting value. You rarely need the exact figure — estimate the fraction and match it to the closest option.
Proportion & Share →
A share is the part divided by the total. To judge whether a share rose or fell, compare how fast the part grew against how fast the total grew.
Multiples (A ÷ B) →
A multiple is simply A divided by B. When the gap is large, truncate both numbers to their leading digits — that is usually precise enough.