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Number Skills Practice Worksheet

Quantitative aptitude lesson 10: Practice: number skills · Set 175 · 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.Three temple bells ring every 6, 18 and 24 minutes. They ring together at 9:00 am. After how many minutes will they next ring together?
  2. 2.Find the third proportional to 6 and 18 (that is, 6 : 18 = 18 : ?).
  3. 3.If 9 cricket balls cost ₹216, how much do 11 cricket balls cost (in ₹)?
  4. 4.22 + 5 × 2 − 4 =
  5. 5.What is the smallest number you must add to 501 so that it divides exactly by 6?
  6. 6.Divide ₹418 between Tara and Rohan in the ratio 6 : 5. How much does Tara get (in ₹)?
  7. 7.Round 33518 to the nearest thousand.
  8. 8.Find the third proportional to 7 and 28 (that is, 7 : 28 = 28 : ?).
  9. 9.Find the HCF of 48 and 30.
  10. 10.Which is closest to 1807 ÷ 21? (a) 180 (b) 900 (c) 90 (d) 45
  11. 11.What is 50% of 402?
  12. 12.Find the third proportional to 2 and 8 (that is, 2 : 8 = 8 : ?).
  13. 13.If 4 kg of rice costs ₹308, how many kg can you buy for ₹385?
  14. 14.3/6 − 5/12 =
  15. 15.Which is closest to 197 + 96 + 599? (a) 800 (b) 900 (c) 1000 (d) 1100
  16. 16.12 painters can paint a school in 8 days. How many days would 16 painters take, working at the same speed?
  17. 17.11 painters can paint a school in 17 days. How many days would 17 painters take, working at the same speed?
  18. 18.A hall floor is 210 cm long and 120 cm wide. It is covered with the largest square tiles that fit exactly. How many tiles are needed?
  19. 19.Diya takes 60 seconds and Rohan 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?
  20. 20.What is the smallest number you must add to 842 so that it divides exactly by 12?
  21. 21.Find the smallest number bigger than 10 that leaves a remainder of 4 when divided by 5, 10 or 6.
  22. 22.4 × (30 − 17) + 16 ÷ 8 =
  23. 23.Find the smallest number bigger than 15 that leaves a remainder of 1 when divided by 8, 15 or 3.
  24. 24.Find the HCF of 135 and 105.
  25. 25.28 − 21 ÷ 7 × 8 =
  26. 26.11 : 12 = 55 : ?
  27. 27.What is 4/7 of 14 litres?
  28. 28.What is the smallest number you must add to 305 so that it divides exactly by 12?
  29. 29.A hall floor is 315 cm long and 225 cm wide. It is covered with the largest square tiles that fit exactly. How many tiles are needed?
  30. 30.Two tanks hold 140 litres and 100 litres of milk. What is the biggest can (in litres) that can empty both tanks exactly, with no milk left over?
  31. 31.Two tanks hold 75 litres and 200 litres of milk. What is the biggest can (in litres) that can empty both tanks exactly, with no milk left over?
  32. 32.7.43 + 1.8 =
  33. 33.60% of a number is 72. What is the number?
  34. 34.Two tanks hold 60 litres and 105 litres of milk. What is the biggest can (in litres) that can empty both tanks exactly, with no milk left over?
  35. 35.If 8 kg of rice costs ₹520, how many kg can you buy for ₹910?
  36. 36.Round 93.54 to one decimal place. =
  37. 37.Which is closest to 805 + 104 + 700? (a) 1800 (b) 1600 (c) 1700 (d) 1500
  38. 38.Find the LCM of 4, 3 and 7.
  39. 39.8 : 11 = 32 : ?
  40. 40.1/4 of 28 + 9 × 3 =

Answer key

  1. 72
  2. 54
  3. 264
  4. 28
  5. 3
  6. 228
  7. 34000
  8. 112
  9. 6
  10. 90
  11. 201
  12. 32
  13. 5
  14. 1/12
  15. 900
  16. 6
  17. 11
  18. 28
  19. 300
  20. 10
  21. 34
  22. 54
  23. 121
  24. 15
  25. 4
  26. 60
  27. 8
  28. 7
  29. 35
  30. 20
  31. 25
  32. 9.23
  33. 120
  34. 15
  35. 14
  36. 93.5
  37. 1600
  38. 84
  39. 44
  40. 34

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