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Number Skills Practice Worksheet

Quantitative aptitude lesson 10: Practice: number skills · Set 64 · 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. 1.5 : 8 = 45 : ?
  2. 2.Find the third proportional to 4 and 20 (that is, 4 : 20 = 20 : ?).
  3. 3.Which is closest to 2105 ÷ 31? (a) 700 (b) 35 (c) 140 (d) 70
  4. 4.Which is closest to 1403 ÷ 19? (a) 140 (b) 35 (c) 70 (d) 700
  5. 5.Find the LCM of 4, 8 and 5.
  6. 6.Farhan scored 20 marks out of 50 in a test. What percentage did Farhan score?
  7. 7.55 ÷ 5 × 3 + 1 =
  8. 8.Divide ₹350 between Dev and Karan in the ratio 7 : 3. How much does Karan get (in ₹)?
  9. 9.24 − 36 ÷ 4 × 2 =
  10. 10.The HCF of two numbers is 9 and their LCM is 216. One of the numbers is 27. What is the other number?
  11. 11.Three temple bells ring every 6, 15 and 9 minutes. They ring together at 9:00 am. After how many minutes will they next ring together?
  12. 12.Two tanks hold 140 litres and 180 litres of milk. What is the biggest can (in litres) that can empty both tanks exactly, with no milk left over?
  13. 13.What percent of 200 is 166?
  14. 14.Which is closest to 299 × 19? (Round each number first.) (a) 60000 (b) 12000 (c) 6000 (d) 600
  15. 15.12 : 2 = 48 : ?
  16. 16.4 : 12 = 12 : ?
  17. 17.The HCF of two numbers is 9 and their LCM is 216. One of the numbers is 72. What is the other number?
  18. 18.12 painters can paint a school in 15 days. How many days would 20 painters take, working at the same speed?
  19. 19.Round 81177 to the nearest ten.
  20. 20.Round 77.42 to one decimal place. =
  21. 21.24 ÷ 2 × 2 + 3 =
  22. 22.A hostel has enough food for 11 students for 22 days. How many days will the same food last for 22 students?
  23. 23.Find the HCF of 15 and 9.
  24. 24.What is 2/7 of 196 kg?
  25. 25.What percent of 80 is 32?
  26. 26.Three temple bells ring every 20, 24 and 12 minutes. They ring together at 9:00 am. After how many minutes will they next ring together?
  27. 27.If 3 pencil boxes cost ₹162, how much do 17 pencil boxes cost (in ₹)?
  28. 28.(7 + 3) × 3 − 1 =
  29. 29.Which of these numbers divides exactly by 4? (a) 3482 (b) 8189 (c) 1755 (d) 1688
  30. 30.Find the LCM of 16 and 6.
  31. 31.Find the third proportional to 5 and 25 (that is, 5 : 25 = 25 : ?).
  32. 32.Which is closest to 2501 ÷ 49? (a) 25 (b) 100 (c) 500 (d) 50
  33. 33.What is the smallest number you must take away from 937 so that it divides exactly by 4?
  34. 34.A car goes 80 km on 4 litres of petrol. How far can it go on 27 litres (in km)?
  35. 35.Round 17.46 to one decimal place. =
  36. 36.What percent of 20 is 6?
  37. 37.The ratio of boys to girls in a class is 3 : 2. There are 27 boys. How many girls are there?
  38. 38.A car goes 144 km on 12 litres of petrol. How far can it go on 13 litres (in km)?
  39. 39.Two tanks hold 270 litres and 315 litres of milk. What is the biggest can (in litres) that can empty both tanks exactly, with no milk left over?
  40. 40.What is the smallest number you must take away from 790 so that it divides exactly by 6?

Answer key

  1. 72
  2. 100
  3. 70
  4. 70
  5. 40
  6. 40
  7. 34
  8. 105
  9. 6
  10. 72
  11. 90
  12. 20
  13. 83
  14. 6000
  15. 8
  16. 36
  17. 27
  18. 9
  19. 81180
  20. 77.4
  21. 27
  22. 11
  23. 3
  24. 56
  25. 40
  26. 120
  27. 918
  28. 29
  29. 1688
  30. 48
  31. 125
  32. 50
  33. 1
  34. 540
  35. 17.5
  36. 30
  37. 18
  38. 156
  39. 45
  40. 4

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