Using a Calculator - Roots, Brackets, Trig and Rounding | GCSE Maths Grade 2 Walkthrough

Square roots, powers, brackets and the fraction button on a scientific calculator, key by key - then changing the answer to a decimal, rounding to decimal places and significant figures, setting your calculator to degrees for sin, cos and tan, and the exam-style questions - all the figures on the display, a reciprocal and the side of a square from its area. All 20 questions on the GCSE Grade 2 Using a Calculator worksheet, worked through step by step on Casio CW and GT X calculators. 📄 Download the free worksheet (exam style, answers included): https://effectiveeducation.online/wor... ✏️ Then practise with GCSE-style questions that mark your answers instantly: https://effectiveeducation.online In this video: • Square roots, squares and cubes • Brackets and the fraction button • Changing the answer to a decimal - FORMAT and S-D • Rounding to decimal places and significant figures • Setting your calculator to degrees for trig • sin, cos and tan - close the bracket • GCSE style - all the figures, reciprocals and 3 significant figures Chapters: 0:00 Q1 Square root of 576 0:27 Q2 17 squared 0:48 Q3 Square root of 12 x 27 - brackets in a root 1:13 Q4 12 squared + 9 squared 1:35 Q5 4.5 squared + 2.3 squared - fraction to decimal 2:11 Q6 (23 - 8) squared - 45 2:48 Q7 (14 + 6 squared) over 5 - the fraction button 3:30 Q8 96 over 4 + the square root of 16 3:57 Q9 Square root of 12.96 - FORMAT to a decimal 4:29 Q10 2.4 cubed - the S-D button 4:56 Q11 Square root of a fraction, to 2 decimal places 6:02 Q12 A fraction with a square root, to 2 decimal places 7:04 Q13 tan 62 - set your calculator to degrees (Casio CW) 8:19 Q14 sin 50 + cos 20 - degrees on the Casio GT X 9:34 Q15 A fraction of sines and cosines, to 2 dp 10:37 Q16 All the figures on the display, then 2 dp 11:47 Q17 The reciprocal of 1.6 12:22 Q18 The side of a square from its area 13:11 Q19 A fraction to 3 significant figures 14:03 Q20 Brackets top and bottom, to 3 significant figures #GCSEMaths #UsingACalculator #MathsRevision