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Number Skills Practice Worksheet

Quantitative aptitude lesson 10: Practice: number skills · Set 633 · 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. 1.73 − 18 ÷ 2 × 4 =
  2. 2.Write 49/50 as a percent.
  3. 3.The HCF of two numbers is 4 and their LCM is 168. One of the numbers is 28. What is the other number?
  4. 4.A car goes 38 km on 2 litres of petrol. How far can it go on 18 litres (in km)?
  5. 5.Find the HCF of 70 and 90.
  6. 6.3/4 − 2/5 =
  7. 7.What is the smallest number you must add to 941 so that it divides exactly by 7?
  8. 8.17 + 12 × 2 − 12 =
  9. 9.Write 1/2 as a percent.
  10. 10.Find the LCM of 14, 4 and 3.
  11. 11.A car goes 72 km on 3 litres of petrol. How far can it go on 39 litres (in km)?
  12. 12.Three temple bells ring every 8, 15 and 24 minutes. They ring together at 9:00 am. After how many minutes will they next ring together?
  13. 13.A car goes 209 km on 11 litres of petrol. How far can it go on 8 litres (in km)?
  14. 14.A car goes 162 km on 9 litres of petrol. How far can it go on 27 litres (in km)?
  15. 15.Find the LCM of 12, 9 and 5.
  16. 16.4 : 3 = 32 : ?
  17. 17.Which is closest to 1002 ÷ 49? (a) 10 (b) 40 (c) 20 (d) 200
  18. 18.Karan scored 68 marks out of 80 in a test. What percentage did Karan score?
  19. 19.8/10 − 2/7 =
  20. 20.Round 79262 to the nearest thousand.
  21. 21.35 + 3 × 4 − 9 =
  22. 22.Which is closest to 302 × 50? (Round each number first.) (a) 1500 (b) 150000 (c) 30000 (d) 15000
  23. 23.What is 10% of 60?
  24. 24.Which of these numbers divides exactly by 6? (a) 4263 (b) 9364 (c) 3222 (d) 9266
  25. 25.Find the third proportional to 6 and 18 (that is, 6 : 18 = 18 : ?).
  26. 26.10 ÷ 2 × 8 + 15 =
  27. 27.1/2 − 2/5 =
  28. 28.What percent of 80 is 60?
  29. 29.The ratio of boys to girls in a class is 6 : 1. There are 24 boys. How many girls are there?
  30. 30.The HCF of two numbers is 5 and their LCM is 100. One of the numbers is 25. What is the other number?
  31. 31.Two tanks hold 270 litres and 240 litres of milk. What is the biggest can (in litres) that can empty both tanks exactly, with no milk left over?
  32. 32.A hostel has enough food for 3 students for 21 days. How many days will the same food last for 7 students?
  33. 33.What is 4/7 of ₹35?
  34. 34.Find the LCM of 2, 10 and 6.
  35. 35.15 − 8 ÷ 2 × 3 =
  36. 36.If 7 notebooks cost ₹322, how much do 12 notebooks cost (in ₹)?
  37. 37.How many factors does 93 have?
  38. 38.A car goes 184 km on 8 litres of petrol. How far can it go on 23 litres (in km)?
  39. 39.1/2 × 8/10 =
  40. 40.Kabir takes 72 seconds and Kavya 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?

Answer key

  1. 37
  2. 98
  3. 24
  4. 342
  5. 10
  6. 7/20
  7. 4
  8. 29
  9. 50
  10. 84
  11. 936
  12. 120
  13. 152
  14. 486
  15. 180
  16. 24
  17. 20
  18. 85
  19. 18/35
  20. 79000
  21. 38
  22. 15000
  23. 6
  24. 3222
  25. 54
  26. 55
  27. 1/10
  28. 75
  29. 4
  30. 20
  31. 30
  32. 9
  33. 20
  34. 30
  35. 3
  36. 552
  37. 4
  38. 529
  39. 2/5
  40. 360

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