(a) The width of a book is 217 cm correct to 1 decimal place. What is the smallest and biggest width the book could have? (b) A pencil has a length 16.25 cm, correct to 2 decimal places.What is the smallest and biggest length the pencil could have?

Question

(a) The width of a book is 217 cm correct to 1 decimal place. What is the smallest and biggest width the book could have? (b) A pencil has a length 16.25 cm, correct to 2 decimal places.What is the smallest and biggest length the pencil could have?

Answer 1

(a) The smallest width the book could have is 216.5 cm and the biggest width the book could have is 217.4 cm.(b) The smallest length the pencil could have is 16.245 cm and the biggest length the pencil could have is 16.255 cm.

Вопрос

(a) The width of a book is 217 cm correct to 1 decimal place. What is the smallest and biggest width the book could have? (b) A pencil has a length 16.25 cm, correct to 2 decimal places.What is the smallest and biggest length the pencil could have?

Решения

Ответ