advertisement

GCSE Higher Revision Starters 2 GRADE D/C/B 26% of 524 Calculate the interest on £6000 invested at 2% for 4 years A car repair cost £125 in 2006 and £175 in 2007. Calculate the percentage increase 136.24 £494.59 40% GRADE C/B Simplify a6xa2 Simplify 24a7 ÷ 6a3 Simplify (6a3b4)² a8 4a4 36a6b8 GRADE A A stratified sample of 50 students is to be taken. Calculate the number of students in Years 7 and 8 included in the sample. Year Group Number of students 7 127 8 149 9 138 10 101 11 85 Year 7 127 x 50 = 11 students 600 Year 8 149 x 50 = 12 students 600 GRADE C/B Solve the following 5x - 7 = 2x + 8 x=5 2(x + 3) < 16 x<5 9 < 3(x +2) < 18 1<x<4 3x - 4 = 16 - 2x x=4 GRADE A Surds questions Simplify √150 Simplify 2√7 x 3√7 Expand (√5 + 2)(√5 + 3) Simplify 10 √2 5√6 42 11 + 5√5 5√2