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Number Skills Practice Worksheet

Quantitative aptitude lesson 10: Practice: number skills · Set 464 · 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. 1.8 painters can paint a school in 5 days. How many days would 2 painters take, working at the same speed?
  2. 2.7.4 × 5 =
  3. 3.What percent of 40 is 12?
  4. 4.The ratio of boys to girls in a class is 4 : 5. There are 32 boys. How many girls are there?
  5. 5.How many factors does 24 have?
  6. 6.30 ÷ 6 × 5 + 13 =
  7. 7.6.46 + 9.2 =
  8. 8.Which is closest to 199 × 70? (Round each number first.) (a) 1400 (b) 14000 (c) 140000 (d) 28000
  9. 9.Find the HCF of 10 and 6.
  10. 10.3 : 4 = 21 : ?
  11. 11.24 ÷ 2 × 6 + 24 =
  12. 12.2/4 − 1/3 =
  13. 13.If 9 mangoes cost ₹36, how much do 6 mangoes cost (in ₹)?
  14. 14.Two tanks hold 15 litres and 40 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 622 so that it divides exactly by 9?
  16. 16.How many factors does 85 have?
  17. 17.7 × (27 − 25) + 14 ÷ 7 =
  18. 18.8.86 + 1.5 =
  19. 19.Find the HCF of 8 and 28.
  20. 20.54 ÷ 9 × 9 + 23 =
  21. 21.What is the smallest number you must take away from 313 so that it divides exactly by 6?
  22. 22.If 6 kg of rice costs ₹318, how many kg can you buy for ₹530?
  23. 23.What is 2/3 of 33 students?
  24. 24.Divide ₹260 between Meera and Manav in the ratio 9 : 4. How much does Manav get (in ₹)?
  25. 25.The ratio of boys to girls in a class is 9 : 8. There are 81 boys. How many girls are there?
  26. 26.4 × (26 − 4) + 18 ÷ 2 =
  27. 27.Find the third proportional to 3 and 15 (that is, 3 : 15 = 15 : ?).
  28. 28.Arjun takes 80 seconds and Aarav takes 50 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?
  29. 29.What is the smallest number you must add to 400 so that it divides exactly by 3?
  30. 30.What is 80% of 545?
  31. 31.Find the HCF of 44 and 33.
  32. 32.5% of a number is 15. What is the number?
  33. 33.Round 24.51 to one decimal place. =
  34. 34.Write 3/5 as a percent.
  35. 35.What is the smallest number you must add to 344 so that it divides exactly by 7?
  36. 36.What is 2/3 of 36 students?
  37. 37.A car goes 36 km on 4 litres of petrol. How far can it go on 23 litres (in km)?
  38. 38.Find the smallest number bigger than 15 that leaves a remainder of 1 when divided by 15, 6 or 3.
  39. 39.What is the smallest number you must take away from 662 so that it divides exactly by 11?
  40. 40.Find the third proportional to 6 and 30 (that is, 6 : 30 = 30 : ?).

Answer key

  1. 20
  2. 37
  3. 30
  4. 40
  5. 8
  6. 38
  7. 15.66
  8. 14000
  9. 2
  10. 28
  11. 96
  12. 1/6
  13. 24
  14. 5
  15. 8
  16. 4
  17. 16
  18. 10.36
  19. 4
  20. 77
  21. 1
  22. 10
  23. 22
  24. 80
  25. 72
  26. 97
  27. 75
  28. 400
  29. 2
  30. 436
  31. 11
  32. 300
  33. 24.5
  34. 60
  35. 6
  36. 24
  37. 207
  38. 31
  39. 2
  40. 150

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