1) Round 3.8794 to two decimal place (2 d.p.) a) 2 b) 3.9 c) 3.80 d) 4 e) 3 f) 3.88 2) The radioactivity of a compound decays by 5% each week. How many weeks will it take for its radioactivity to reduce by half? a) 10 Weeks b) 12 Weeks c) 10 Weeks d) 16 Weeks e) 20 Weeks f) 14 Weeks 3) 500 x 250 = ? a) 125000 b) 120000 c) 100000 d) 1300000 e) 5000000 f) 1090000 4) What is half of a half of a half? a) One Eighth b) One Quarter c) One Third d) One Half e) One f) Two Thirds 5) True or False: Salina invests £10,000 for 5 years in an account offering 6% per annum compound interest. She will have £13,382 (to the nearest pound) after the 5 year term. a) False b) True 6) Adam invests £2500 in an account offering 3% compound interest per annum. How much will he have in the account after 4 years? a) £2,813.77 b) £2,000 c) £2813.80 d) £2900 e) £3000.11 f) £2910.00 7) What is the square of the square root of 23? a) 23 b) 490 c) 500 d) 25 e) 9 f) 3 8) Round 0.68499 to two decimal place (2 d.p.) a) 0.68 b) 0.70 c) 0.7 d) 0.69 e) .685 f) .700 9) Write 60% as a decimal. a) .6 b) 0.6 c) 60 d) 600 e) 6 10) 499 x 5 = ? a) 2500 b) 2495 c) 2494 d) 2398 e) 2501 f) 2255 11) A test was marked out of a total of 60. Jordi scored 38 marks. What was his percentage to the nearest whole number? a) 66 b) 16 c) 60 d) 64 e) 62 f) 63 12) 4 x -3 = a) -11 b) -12 c) -13 d) -14 e) -15 f) -16 13) True or False? 3 x -7 = -21 a) False b) True
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Mixed calculations - Compound interest, rounding, fractions and decimals
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Msearson
KS2
KS3
Maths
Numbers & fractions
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