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Number Skills Practice Worksheet

Quantitative aptitude lesson 10: Practice: number skills · Set 473 · 40 questions
TalentJR

The method (Spot the type): Read the question and name the topic: HCF/LCM, fraction, ratio, percent … Use that lesson’s method and write each step. Check: is the answer sensible in size and units?

NameDateTime takenScore ___ / 40
  1. 1.Find the third proportional to 9 and 18 (that is, 9 : 18 = 18 : ?).
  2. 2.Round 76.79 to one decimal place. =
  3. 3.2.15 + 1.2 =
  4. 4.Write 19/20 as a percent.
  5. 5.How many factors does 16 have?
  6. 6.(15 + 16) × 4 − 30 =
  7. 7.Which is closest to 397 × 69? (Round each number first.) (a) 2800 (b) 28000 (c) 280000 (d) 56000
  8. 8.8/12 + 3/8 =
  9. 9.Round 82.23 to one decimal place. =
  10. 10.A car goes 130 km on 10 litres of petrol. How far can it go on 3 litres (in km)?
  11. 11.Which is closest to 399 × 42? (Round each number first.) (a) 1600 (b) 16000 (c) 160000 (d) 32000
  12. 12.7.55 + 5.9 =
  13. 13.6/7 + 5/8 =
  14. 14.A car goes 57 km on 3 litres of petrol. How far can it go on 11 litres (in km)?
  15. 15.Which is closest to 2095 ÷ 29? (a) 140 (b) 35 (c) 70 (d) 700
  16. 16.If 8 kg of rice costs ₹608, how many kg can you buy for ₹152?
  17. 17.2/3 of 15 + 2 × 7 =
  18. 18.Round 25.17 to one decimal place. =
  19. 19.A hall floor is 420 cm long and 300 cm wide. It is covered with the largest square tiles that fit exactly. How many tiles are needed?
  20. 20.1/4 + 4/5 =
  21. 21.(9 + 5) × 4 − 8 =
  22. 22.60% of a number is 297. What is the number?
  23. 23.Two tanks hold 75 litres and 120 litres of milk. What is the biggest can (in litres) that can empty both tanks exactly, with no milk left over?
  24. 24.Divide ₹259 between Nisha and Meera in the ratio 2 : 5. How much does Nisha get (in ₹)?
  25. 25.5 : 13 = 45 : ?
  26. 26.Find the third proportional to 6 and 18 (that is, 6 : 18 = 18 : ?).
  27. 27.Round 84.67 to one decimal place. =
  28. 28.Two tanks hold 105 litres and 120 litres of milk. What is the biggest can (in litres) that can empty both tanks exactly, with no milk left over?
  29. 29.Find the smallest number bigger than 15 that leaves a remainder of 1 when divided by 9, 15 or 6.
  30. 30.Three temple bells ring every 12, 30 and 15 minutes. They ring together at 9:00 am. After how many minutes will they next ring together?
  31. 31.What is the smallest number you must add to 431 so that it divides exactly by 11?
  32. 32.If 2 kg of rice costs ₹154, how many kg can you buy for ₹847?
  33. 33.Aditya takes 80 seconds and Diya takes 45 seconds to run once round a track. They start together from the start line. After how many seconds will they first be at the start line together again?
  34. 34.If 8 kg of rice costs ₹448, how many kg can you buy for ₹616?
  35. 35.Which is closest to 401 + 705 + 303? (a) 1400 (b) 1600 (c) 1300 (d) 1500
  36. 36.37 − 15 ÷ 3 × 5 =
  37. 37.If 11 pens cost ₹572, how much do 6 pens cost (in ₹)?
  38. 38.If 2 kg of rice costs ₹140, how many kg can you buy for ₹560?
  39. 39.40% of a number is 130. What is the number?
  40. 40.Find the LCM of 8, 3 and 4.

Answer key

  1. 36
  2. 76.8
  3. 3.35
  4. 95
  5. 5
  6. 94
  7. 28000
  8. 25/24
  9. 82.2
  10. 39
  11. 16000
  12. 13.45
  13. 83/56
  14. 209
  15. 70
  16. 2
  17. 24
  18. 25.2
  19. 35
  20. 21/20
  21. 48
  22. 495
  23. 15
  24. 74
  25. 117
  26. 54
  27. 84.7
  28. 15
  29. 91
  30. 60
  31. 9
  32. 11
  33. 720
  34. 11
  35. 1400
  36. 12
  37. 312
  38. 8
  39. 325
  40. 24

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