Upper and Lower Bounds | 40 Worked Examples | Edexcel GCSE Higher Maths

40 progressive Edexcel GCSE Higher (1MA1) bounds questions with full mark-scheme style worked solutions. Every line is explained and every mark is annotated at the exact point it would be awarded.

What’s inside:
Easy: finding upper and lower bounds and error intervals for values rounded to a whole number, a decimal place, or the nearest ten.
Medium: bounds of sums, differences, areas and perimeters, and average speed from rounded distance and time.
Hard: bounds of division (density and speed, choosing max top with min bottom), truncation error intervals, and giving an answer to a suitable degree of accuracy by rounding both bounds until they agree.

Every solution breaks the work down one step at a time, with the reasoning spelled out in plain English and the tricky division and subtraction rules made explicit. Typeset in LaTeX for clean mathematical notation.

Ideal for: Year 10 and 11 students sitting Edexcel GCSE Higher Mathematics (1MA1), plus tutors and teachers building targeted practice. Print-friendly, hand straight to students.