x

What bounds mean

Number line with 20.5 as a filled endpoint and 21.5 as an open endpoint for 21 cm to the nearest cm

A rounded measurement is not exact. If a length is given as 21 cm to the nearest cm, the true value lies in a continuous interval of possible values.

Bounds Lesson

IGCSE
Maths
Bounds

Step-by-step lessons covering Oxford AQA IGCSE Maths Bounds for Core and Extended tier. Each lesson works through exam-style questions in Paper 1 and Paper 2 (Core: 1C and 2C; Extension: 1E and 2E) format. Since content from any part of the specification can appear on either paper, keep number and algebra fluency sharp throughout the course rather than leaving it until near the exam.

Lessons

x

What bounds mean

Number line with 20.5 as a filled endpoint and 21.5 as an open endpoint for 21 cm to the nearest cm

A rounded measurement is not exact. If a length is given as 21 cm to the nearest cm, the true value lies in a continuous interval of possible values.

Bounds Lesson

IGCSE
Maths
Bounds

Step-by-step lessons covering Oxford AQA IGCSE Maths Bounds for Core and Extended tier. Each lesson works through exam-style questions in Paper 1 and Paper 2 (Core: 1C and 2C; Extension: 1E and 2E) format. Since content from any part of the specification can appear on either paper, keep number and algebra fluency sharp throughout the course rather than leaving it until near the exam.