2 min de lectura
How to calculate percentages: the three types of problem
How to solve percentage problems of all three kinds — a percentage of an amount, one number as a percentage of another, and percentage change — with checked examples.
Matemáticas cotidianas
Porcentajes, razones, conversiones de unidades, fechas y horas.
2 artículos
1 min de lectura
Ratios and proportions
Simplify ratios, share amounts in a ratio, and solve proportions — the maths behind recipes, maps and scale models.