Grade 7 to 9 Core Warmup — Day 32 of 40 | Edexcel GCSE Maths (1MA1) Calculator Walkthrough

Master Grade 7 to 9 calculator fundamentals on Day 32 of the 40-Day GCSE Maths (1MA1) revision series[cite: 49]. Take 80 seconds to attempt each exam question independently, followed immediately by full step-by-step worked solutions showing where method marks are won[cite: 49, 50]. Timestamps: 00:00 Introduction 00:08 Q1 Linear Simultaneous Equations (Question) 01:29 Q1 Linear Simultaneous Equations (Solution) 01:49 Q2 Similar Shapes Volume (Question) 03:10 Q2 Similar Shapes Volume (Solution) 03:30 Q3 Solving Quadratic Inequalities (Question) 04:50 Q3 Solving Quadratic Inequalities (Solution) 05:10 Q4 Changing the Subject Twice (Question) 06:30 Q4 Changing the Subject Twice (Solution) 06:50 Q5 Finding Inverse Functions (Question) 08:10 Q5 Finding Inverse Functions (Solution) 08:30 Q6 Capture-Recapture Method (Question) 09:50 Q6 Capture-Recapture Method (Solution) 10:10 Q7 Quadratic Formula to 2 d.p. (Question) 11:30 Q7 Quadratic Formula to 2 d.p. (Solution) 11:50 Q8 Repeated Reverse Percentages (Question) 13:10 Q8 Repeated Reverse Percentages (Solution) 13:30 Next Steps & Revision Resources Questions Covered in Day 32: 1. Solving linear simultaneous equations by elimination[cite: 49, 50] 2. Calculating volume from area scale factors for mathematically similar solids[cite: 49, 50] 3. Solving quadratic inequalities using factorisation[cite: 49, 50] 4. Rearranging algebraic rational expressions where the subject appears twice[cite: 49, 50] 5. Finding the algebraic inverse function f⁻¹(x)[cite: 49, 50] 6. Estimating total population using the capture-recapture method[cite: 49, 50] 7. Solving quadratic equations to 2 decimal places using the quadratic formula[cite: 49, 50] 8. Multi-step reverse percentages with repeated percentage decreases[cite: 49, 50] Download the 40-Day Revision Plan workbooks, question packs, and predicted exam papers: https://mygrade9mathstutor.com[cite: 49] Subscribe for daily walkthroughs and exam coaching:    / @mygrade9mathstutor   #GCSEMaths #EdexcelGCSE #1MA1 #Grade7Maths #MathsRevision #CalculatorPaper #MyGrade9MathsTutor