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Number Skills Practice Worksheet

Quantitative aptitude lesson 10: Practice: number skills · Set 262 · 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. 1.3.46 + 4.5 =
  2. 2.How many factors does 14 have?
  3. 3.Which is closest to 497 × 79? (Round each number first.) (a) 40000 (b) 80000 (c) 400000 (d) 4000
  4. 4.Which is closest to 698 + 203 + 198? (a) 1300 (b) 1100 (c) 1200 (d) 1000
  5. 5.What percent of 20 is 2?
  6. 6.(20 + 2) × 8 − 4 =
  7. 7.17 + 12 × 10 − 6 =
  8. 8.How many factors does 72 have?
  9. 9.Dev takes 40 seconds and Priya takes 75 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.Two tanks hold 450 litres and 400 litres of milk. What is the biggest can (in litres) that can empty both tanks exactly, with no milk left over?
  11. 11.Which is closest to 1199 ÷ 29? (a) 40 (b) 400 (c) 80 (d) 20
  12. 12.Find the smallest number bigger than 10 that leaves a remainder of 1 when divided by 5, 4 or 10.
  13. 13.A car goes 153 km on 9 litres of petrol. How far can it go on 6 litres (in km)?
  14. 14.Two tanks hold 150 litres and 60 litres of milk. What is the biggest can (in litres) that can empty both tanks exactly, with no milk left over?
  15. 15.What is the smallest number you must add to 810 so that it divides exactly by 13?
  16. 16.Write 9/10 as a percent.
  17. 17.3 : 12 = 18 : ?
  18. 18.What is the smallest number you must take away from 498 so that it divides exactly by 4?
  19. 19.Two tanks hold 360 litres and 315 litres of milk. What is the biggest can (in litres) that can empty both tanks exactly, with no milk left over?
  20. 20.Find the LCM of 32 and 20.
  21. 21.Round 38039 to the nearest thousand.
  22. 22.40 − 45 ÷ 5 × 4 =
  23. 23.Round 27194 to the nearest thousand.
  24. 24.The HCF of two numbers is 2 and their LCM is 72. One of the numbers is 8. What is the other number?
  25. 25.29.5 ÷ 5 =
  26. 26.Three temple bells ring every 9, 15 and 5 minutes. They ring together at 9:00 am. After how many minutes will they next ring together?
  27. 27.Which of these numbers divides exactly by 8? (a) 7596 (b) 8844 (c) 9477 (d) 8408
  28. 28.42 − 24 ÷ 3 × 3 =
  29. 29.What is the smallest number you must add to 507 so that it divides exactly by 7?
  30. 30.What is the smallest number you must take away from 962 so that it divides exactly by 6?
  31. 31.Three temple bells ring every 15, 12 and 5 minutes. They ring together at 9:00 am. After how many minutes will they next ring together?
  32. 32.2.35 + 7.9 =
  33. 33.What is the smallest number you must add to 385 so that it divides exactly by 12?
  34. 34.Which of these numbers divides exactly by 9? (a) 7084 (b) 9329 (c) 7899 (d) 6876
  35. 35.If 3 kg of rice costs ₹210, how many kg can you buy for ₹350?
  36. 36.3/4 + 7/12 =
  37. 37.Which is closest to 298 × 19? (Round each number first.) (a) 6000 (b) 12000 (c) 600 (d) 60000
  38. 38.Find the HCF of 88 and 33.
  39. 39.Two tanks hold 280 litres and 160 litres of milk. What is the biggest can (in litres) that can empty both tanks exactly, with no milk left over?
  40. 40.Nisha scored 4 marks out of 25 in a test. What percentage did Nisha score?

Answer key

  1. 7.96
  2. 4
  3. 40000
  4. 1100
  5. 10
  6. 172
  7. 131
  8. 12
  9. 600
  10. 50
  11. 40
  12. 21
  13. 102
  14. 30
  15. 9
  16. 90
  17. 72
  18. 2
  19. 45
  20. 160
  21. 38000
  22. 4
  23. 27000
  24. 18
  25. 5.9
  26. 45
  27. 8408
  28. 18
  29. 4
  30. 2
  31. 60
  32. 10.25
  33. 11
  34. 6876
  35. 5
  36. 4/3
  37. 6000
  38. 11
  39. 40
  40. 16

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