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Number Skills Practice Worksheet

Quantitative aptitude lesson 10: Practice: number skills · Set 554 · 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.How many factors does 86 have?
  2. 2.Two tanks hold 180 litres and 210 litres of milk. What is the biggest can (in litres) that can empty both tanks exactly, with no milk left over?
  3. 3.Find the HCF of 78 and 91.
  4. 4.29.6 ÷ 8 =
  5. 5.The ratio of boys to girls in a class is 1 : 6. There are 5 boys. How many girls are there?
  6. 6.3.3 ÷ 3 =
  7. 7.3.4 × 4 =
  8. 8.Round 33.41 to one decimal place. =
  9. 9.Three temple bells ring every 8, 5 and 15 minutes. They ring together at 9:00 am. After how many minutes will they next ring together?
  10. 10.Two tanks hold 405 litres and 180 litres of milk. What is the biggest can (in litres) that can empty both tanks exactly, with no milk left over?
  11. 11.9 × (16 − 6) + 27 ÷ 9 =
  12. 12.A car goes 90 km on 10 litres of petrol. How far can it go on 35 litres (in km)?
  13. 13.Which is closest to 2396 ÷ 29? (a) 160 (b) 800 (c) 40 (d) 80
  14. 14.3/7 − 2/6 =
  15. 15.If 10 erasers cost ₹470, how much do 11 erasers cost (in ₹)?
  16. 16.8 : 12 = 16 : ?
  17. 17.Rahul scored 6 marks out of 50 in a test. What percentage did Rahul score?
  18. 18.Find the third proportional to 7 and 21 (that is, 7 : 21 = 21 : ?).
  19. 19.How many factors does 82 have?
  20. 20.Nisha scored 4 marks out of 20 in a test. What percentage did Nisha score?
  21. 21.How many factors does 96 have?
  22. 22.Kabir takes 80 seconds and Saanvi takes 30 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?
  23. 23.Divide ₹376 between Meera and Vivaan in the ratio 5 : 3. How much does Meera get (in ₹)?
  24. 24.Find the LCM of 7, 15 and 14.
  25. 25.60 ÷ 5 × 2 + 23 =
  26. 26.10% of a number is 35. What is the number?
  27. 27.The ratio of boys to girls in a class is 1 : 7. There are 8 boys. How many girls are there?
  28. 28.Divide ₹702 between Arjun and Ananya in the ratio 4 : 9. How much does Arjun get (in ₹)?
  29. 29.What is the smallest number you must add to 541 so that it divides exactly by 3?
  30. 30.How many factors does 21 have?
  31. 31.What is 60% of 5?
  32. 32.What is 150% of 464?
  33. 33.Which is closest to 4494 ÷ 51? (a) 900 (b) 90 (c) 180 (d) 45
  34. 34.Write 29/50 as a percent.
  35. 35.2/3 of 33 + 4 × 6 =
  36. 36.What percent of 400 is 376?
  37. 37.If 10 pencil boxes cost ₹120, how much do 3 pencil boxes cost (in ₹)?
  38. 38.Three temple bells ring every 12, 8 and 5 minutes. They ring together at 9:00 am. After how many minutes will they next ring together?
  39. 39.Which of these numbers divides exactly by 8? (a) 1670 (b) 1808 (c) 6739 (d) 3390
  40. 40.If 9 kg of rice costs ₹405, how many kg can you buy for ₹315?

Answer key

  1. 4
  2. 30
  3. 13
  4. 3.7
  5. 30
  6. 1.1
  7. 13.6
  8. 33.4
  9. 120
  10. 45
  11. 93
  12. 315
  13. 80
  14. 2/21
  15. 517
  16. 24
  17. 12
  18. 63
  19. 4
  20. 20
  21. 12
  22. 240
  23. 235
  24. 210
  25. 47
  26. 350
  27. 56
  28. 216
  29. 2
  30. 4
  31. 3
  32. 696
  33. 90
  34. 58
  35. 46
  36. 94
  37. 36
  38. 120
  39. 1808
  40. 7

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