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Number Skills Practice Worksheet

Quantitative aptitude lesson 10: Practice: number skills · Set 204 · 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. 1.58 − 15 ÷ 3 × 5 =
  2. 2.A car goes 242 km on 11 litres of petrol. How far can it go on 39 litres (in km)?
  3. 3.If 8 kg of rice costs ₹216, how many kg can you buy for ₹162?
  4. 4.Which is closest to 899 × 82? (Round each number first.) (a) 144000 (b) 720000 (c) 7200 (d) 72000
  5. 5.Write 3/10 as a percent.
  6. 6.75% of a number is 138. What is the number?
  7. 7.What percent of 25 is 22?
  8. 8.What is 75% of 104?
  9. 9.1.99 + 9.8 =
  10. 10.Which is closest to 598 × 28? (Round each number first.) (a) 18000 (b) 180000 (c) 36000 (d) 1800
  11. 11.Round 60569 to the nearest hundred.
  12. 12.(3 + 4) × 9 − 2 =
  13. 13.Find the LCM of 2, 14 and 3.
  14. 14.A hostel has enough food for 7 students for 9 days. How many days will the same food last for 9 students?
  15. 15.Two tanks hold 75 litres and 125 litres of milk. What is the biggest can (in litres) that can empty both tanks exactly, with no milk left over?
  16. 16.Find the smallest number bigger than 10 that leaves a remainder of 2 when divided by 4, 5 or 10.
  17. 17.5 painters can paint a school in 16 days. How many days would 8 painters take, working at the same speed?
  18. 18.2.15 + 1.9 =
  19. 19.What is 60% of 300?
  20. 20.Round 96.77 to one decimal place. =
  21. 21.How many factors does 66 have?
  22. 22.Divide ₹216 between Arjun and Isha in the ratio 5 : 4. How much does Arjun get (in ₹)?
  23. 23.Which is closest to 801 × 32? (Round each number first.) (a) 240000 (b) 2400 (c) 48000 (d) 24000
  24. 24.What is the smallest number you must add to 581 so that it divides exactly by 4?
  25. 25.3/10 + 3/12 =
  26. 26.Saanvi takes 54 seconds and Rahul takes 72 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?
  27. 27.(13 + 8) × 3 − 3 =
  28. 28.Divide ₹165 between Aarav and Arjun in the ratio 7 : 8. How much does Aarav get (in ₹)?
  29. 29.Find the third proportional to 6 and 18 (that is, 6 : 18 = 18 : ?).
  30. 30.Find the third proportional to 2 and 8 (that is, 2 : 8 = 8 : ?).
  31. 31.45 − 20 ÷ 4 × 4 =
  32. 32.Find the smallest number bigger than 9 that leaves a remainder of 1 when divided by 9, 3 or 6.
  33. 33.Which is closest to 498 × 52? (Round each number first.) (a) 250000 (b) 50000 (c) 25000 (d) 2500
  34. 34.What is the smallest number you must add to 615 so that it divides exactly by 9?
  35. 35.What is the smallest number you must add to 446 so that it divides exactly by 11?
  36. 36.15 + 9 × 12 − 13 =
  37. 37.What is the smallest number you must take away from 233 so that it divides exactly by 13?
  38. 38.3/4 − 1/2 =
  39. 39.The HCF of two numbers is 4 and their LCM is 56. One of the numbers is 28. What is the other number?
  40. 40.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?

Answer key

  1. 33
  2. 858
  3. 6
  4. 72000
  5. 30
  6. 184
  7. 88
  8. 78
  9. 11.79
  10. 18000
  11. 60600
  12. 61
  13. 42
  14. 7
  15. 25
  16. 22
  17. 10
  18. 4.05
  19. 180
  20. 96.8
  21. 8
  22. 120
  23. 24000
  24. 3
  25. 11/20
  26. 216
  27. 60
  28. 77
  29. 54
  30. 32
  31. 25
  32. 19
  33. 25000
  34. 6
  35. 5
  36. 110
  37. 12
  38. 1/4
  39. 8
  40. 30

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