学習センター

生活の数学

百分率、比、単位の換算、日付と時間。

2 件の記事

• 2 分で読めます

  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.

• 1 分で読めます

  Ratios and proportions

  Simplify ratios, share amounts in a ratio, and solve proportions — the maths behind recipes, maps and scale models.