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Number Skills Practice Worksheet

Quantitative aptitude lesson 10: Practice: number skills · Set 609 · 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.Two tanks hold 25 litres and 35 litres of milk. What is the biggest can (in litres) that can empty both tanks exactly, with no milk left over?
  2. 2.Write 47/50 as a percent.
  3. 3.Which is closest to 1502 ÷ 51? (a) 15 (b) 60 (c) 30 (d) 300
  4. 4.What is 80% of 590?
  5. 5.9.2 × 6 =
  6. 6.A car goes 110 km on 5 litres of petrol. How far can it go on 4 litres (in km)?
  7. 7.What is the smallest number you must take away from 191 so that it divides exactly by 11?
  8. 8.What is the smallest number you must take away from 748 so that it divides exactly by 13?
  9. 9.What is the smallest number you must add to 182 so that it divides exactly by 12?
  10. 10.5 painters can paint a school in 24 days. How many days would 15 painters take, working at the same speed?
  11. 11.Two tanks hold 25 litres and 15 litres of milk. What is the biggest can (in litres) that can empty both tanks exactly, with no milk left over?
  12. 12.If 4 kg of rice costs ₹336, how many kg can you buy for ₹756?
  13. 13.Round 10.36 to one decimal place. =
  14. 14.If 7 mangoes cost ₹231, how much do 2 mangoes cost (in ₹)?
  15. 15.50% of a number is 103. What is the number?
  16. 16.5% of a number is 7. What is the number?
  17. 17.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?
  18. 18.What is the smallest number you must take away from 248 so that it divides exactly by 9?
  19. 19.5% of a number is 18. What is the number?
  20. 20.Divide ₹780 between Meera and Vivaan in the ratio 8 : 5. How much does Vivaan get (in ₹)?
  21. 21.What percent of 20 is 17?
  22. 22.4.8 × 4 =
  23. 23.Find the smallest number bigger than 12 that leaves a remainder of 3 when divided by 12, 5 or 4.
  24. 24.Find the third proportional to 8 and 32 (that is, 8 : 32 = 32 : ?).
  25. 25.5% of a number is 29. What is the number?
  26. 26.Find the HCF of 20 and 12.
  27. 27.Find the LCM of 9, 3 and 12.
  28. 28.10 : 15 = 80 : ?
  29. 29.4.85 + 8.7 =
  30. 30.The HCF of two numbers is 7 and their LCM is 168. One of the numbers is 21. What is the other number?
  31. 31.4 : 14 = 16 : ?
  32. 32.Three temple bells ring every 4, 15 and 10 minutes. They ring together at 9:00 am. After how many minutes will they next ring together?
  33. 33.Which is closest to 699 × 22? (Round each number first.) (a) 28000 (b) 1400 (c) 140000 (d) 14000
  34. 34.Three temple bells ring every 5, 8 and 4 minutes. They ring together at 9:00 am. After how many minutes will they next ring together?
  35. 35.5 × (25 − 23) + 54 ÷ 9 =
  36. 36.6.85 + 9.8 =
  37. 37.What is 150% of 124?
  38. 38.Find the LCM of 4, 11 and 3.
  39. 39.How many factors does 15 have?
  40. 40.Priya takes 60 seconds and Rahul 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?

Answer key

  1. 5
  2. 94
  3. 30
  4. 472
  5. 55.2
  6. 88
  7. 4
  8. 7
  9. 10
  10. 8
  11. 5
  12. 9
  13. 10.4
  14. 66
  15. 206
  16. 140
  17. 25
  18. 5
  19. 360
  20. 300
  21. 85
  22. 19.2
  23. 63
  24. 128
  25. 580
  26. 4
  27. 36
  28. 120
  29. 13.55
  30. 56
  31. 56
  32. 60
  33. 14000
  34. 40
  35. 16
  36. 16.65
  37. 186
  38. 132
  39. 4
  40. 300

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