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Calculating with bounds and error intervals

Find the upper and lower bound of a calculation made with rounded numbers

5 hand-picked video lessons for this topic, each checked for relevance and clarity, graded by difficulty and labelled by depth. Press play to watch — nothing loads from YouTube until you do.

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Grade 6–9 Core 🇬🇧 UK

Upper and Lower Bounds - GCSE Higher Maths

1st Class Maths 309K views

Learn to calculate upper and lower bounds in real problems, including speed and algebraic examples.

Jump to 0:22Introducing upper and lower bounds 2:45Example 1 - Finding upper and lower bounds 6:43Summary table of how to calculate bounds for different calculations 8:39Example 2 - Context example with speed, distance, time 11:10Example 3 - Algebraic example 12:57Example 4 - Another algebraic example

Grade 4–8 Core 🇬🇧 UK

Bounds - Error Intervals (Higher & Foundation) | GCSE Maths Tutor

The GCSE Maths Tutor 168K views

Covers bounds and error intervals for both Foundation and Higher tiers in one video.

Grade 5–8 Core 🇬🇧 UK

Lower Bounds, Upper Bounds and Error Intervals - GCSE

Dr Frost Maths 34K views

Clear Dr Frost lesson on finding bounds and error intervals, including truncation.

Jump to 0:00Concept of bounds 2:29Application 3:05Example 4:00Error interval 4:51Bounds when rounding to 1dp 6:26Bounds when truncating

Grade 3–6 Core 🇬🇧 UK

Error Intervals - Corbettmaths

corbettmaths 285K views

Corbettmaths explains error intervals for both rounded and truncated values.

Grade 3–6 Core 🇬🇧 UK

Upper & Lower Bounds | Number | Maths | FuseSchool

FuseSchool - Global Education 364K views

Animated explanation of what upper and lower bounds are and how to find them.