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Name: _______________________________________________Year 11 Revision - Lesson 1&2Date:Number Calculations (including primes, prime factors, LCM and HCF)Standard formCalculations with boundsRules of IndicesCalculations with percentagesRatio and Proportion (including direct and inverse)
QuestionsQ1.(a) Write 0.00562 in standard form............................................................(1)(b) Write 1.452 × 103as an ordinary number............................................................(1)(Total for question = 2 marks)Q2.Work out (13.8 × 107) × (5.4 × 10–12)Give your answer as an ordinary number............................................................(Total for question = 2 marks)Q3.Work out (3.42 × 10−7) ÷ (7.5 × 10−6)Give your answer in standard form.
...........................................................(Total for question = 2 marks)Q4.In May 2019, the distance between Earth and Mars was 3.9 × 107km.In May 2019, a signal was sent from Earth to Mars.Assuming that the signal sent from Earth to Mars travelled at a speed of 3 × 105km per second,(a) how long did the signal take to get to Mars?...........................................................seconds(2)The speed of the signal sent from Earth to Mars in May 2019 was actually less than 3 × 105km persecond.(b) How will this affect your answer to part (a)?.......................................................................................................................................................................................................................................................................................................................................................................................................................................(1)(Total for question = 3 marks)Q5.(a) Write the number 0.000 086 23 in standard form............................................................(1)(b) Work outGive your answer in standard form, correct to 3 significant figures.
...........................................................(2)(Total for question = 3 marks)Q6.w= 5.6 × 10–5d= 1.4 × 10–4(a) Work out the value ofTGive your answer in standard form correct to 3 significant figures..
(b) Lottie is wrong.Explain why...........................................................................................................................................................................................................................................................................................(2)(Total for question = 4 marks)Q7.
(a) Find the lowest common multiple (LCM) of 40 and 56...........................................................(2)2
(b) Write down the highest common factor (HCF) ofAandB............................................................(1)(Total for question = 3 marks)Q8.Find the Lowest Common Multiple (LCM) of 108 and 120...........................................................(Total for question = 3 marks)Q9.(a) Write 84 as a product of its prime factors.

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Tags
Microeconomics, Ratio, Labor theory of value, exchange value

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