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Number Skills Practice Worksheet

Quantitative aptitude lesson 10: Practice: number skills · Set 644 · 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.What is 40% of 335?
  2. 2.31 − 18 ÷ 6 × 7 =
  3. 3.Three temple bells ring every 6, 18 and 10 minutes. They ring together at 9:00 am. After how many minutes will they next ring together?
  4. 4.Find the third proportional to 7 and 14 (that is, 7 : 14 = 14 : ?).
  5. 5.11 : 14 = 88 : ?
  6. 6.What is the smallest number you must add to 141 so that it divides exactly by 11?
  7. 7.A hall floor is 200 cm long and 125 cm wide. It is covered with the largest square tiles that fit exactly. How many tiles are needed?
  8. 8.Write 9/10 as a percent.
  9. 9.Saanvi takes 72 seconds and Karan takes 90 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?
  10. 10.Find the LCM of 54 and 48.
  11. 11.What is 40% of 245?
  12. 12.5 : 4 = 30 : ?
  13. 13.What is 30% of 30?
  14. 14.Write 1/2 as a percent.
  15. 15.8 × (15 − 8) + 27 ÷ 3 =
  16. 16.2 × (20 − 3) + 10 ÷ 5 =
  17. 17.2 × (24 − 6) + 42 ÷ 7 =
  18. 18.Two tanks hold 250 litres and 150 litres of milk. What is the biggest can (in litres) that can empty both tanks exactly, with no milk left over?
  19. 19.2.54 + 4.5 =
  20. 20.Manav scored 37 marks out of 50 in a test. What percentage did Manav score?
  21. 21.What is the smallest number you must take away from 698 so that it divides exactly by 4?
  22. 22.Diya takes 54 seconds and Nisha takes 36 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?
  23. 23.What is 12% of 425?
  24. 24.44 ÷ 4 × 4 + 17 =
  25. 25.A car goes 91 km on 7 litres of petrol. How far can it go on 38 litres (in km)?
  26. 26.What is the smallest number you must take away from 778 so that it divides exactly by 6?
  27. 27.Find the HCF of 40 and 70.
  28. 28.1/5 × 5/11 =
  29. 29.Which of these numbers divides exactly by 8? (a) 8279 (b) 2753 (c) 2424 (d) 8460
  30. 30.21 + 7 × 7 − 17 =
  31. 31.Which is closest to 798 + 797 + 697? (a) 2500 (b) 2300 (c) 2400 (d) 2200
  32. 32.What is 80% of 300?
  33. 33.The HCF of two numbers is 5 and their LCM is 360. One of the numbers is 45. What is the other number?
  34. 34.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?
  35. 35.The HCF of two numbers is 8 and their LCM is 224. One of the numbers is 32. What is the other number?
  36. 36.If 11 erasers cost ₹484, how much do 3 erasers cost (in ₹)?
  37. 37.(3 + 13) × 3 − 5 =
  38. 38.Find the HCF of 14 and 8.
  39. 39.Which is closest to 296 × 61? (Round each number first.) (a) 1800 (b) 36000 (c) 180000 (d) 18000
  40. 40.7/9 of 36 + 8 × 3 =

Answer key

  1. 134
  2. 10
  3. 90
  4. 28
  5. 112
  6. 2
  7. 40
  8. 90
  9. 360
  10. 432
  11. 98
  12. 24
  13. 9
  14. 50
  15. 65
  16. 36
  17. 42
  18. 50
  19. 7.04
  20. 74
  21. 2
  22. 108
  23. 51
  24. 61
  25. 494
  26. 4
  27. 10
  28. 1/11
  29. 2424
  30. 53
  31. 2300
  32. 240
  33. 40
  34. 15
  35. 56
  36. 132
  37. 43
  38. 2
  39. 18000
  40. 52

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