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Number Skills Practice Worksheet

Quantitative aptitude lesson 10: Practice: number skills · Set 237 · 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. 1.5 × (12 − 3) + 108 ÷ 9 =
  2. 2.12% of a number is 9. What is the number?
  3. 3.54 − 8 ÷ 2 × 9 =
  4. 4.If 2 pens cost ₹92, how much do 16 pens cost (in ₹)?
  5. 5.How many factors does 84 have?
  6. 6.Which is closest to 1008 ÷ 49? (a) 40 (b) 10 (c) 200 (d) 20
  7. 7.What is the smallest number you must take away from 158 so that it divides exactly by 8?
  8. 8.8 painters can paint a school in 15 days. How many days would 3 painters take, working at the same speed?
  9. 9.10 : 12 = 20 : ?
  10. 10.3/4 − 5/11 =
  11. 11.What is 25% of 452?
  12. 12.Find the HCF of 70 and 60.
  13. 13.What is the smallest number you must add to 519 so that it divides exactly by 4?
  14. 14.What is the smallest number you must take away from 704 so that it divides exactly by 3?
  15. 15.Find the HCF of 35 and 21.
  16. 16.Which is closest to 1203 ÷ 31? (a) 400 (b) 20 (c) 80 (d) 40
  17. 17.6/7 − 2/3 =
  18. 18.68 − 63 ÷ 9 × 8 =
  19. 19.The ratio of boys to girls in a class is 7 : 8. There are 49 boys. How many girls are there?
  20. 20.What is 7/8 of 72 km?
  21. 21.A car goes 27 km on 3 litres of petrol. How far can it go on 9 litres (in km)?
  22. 22.6 : 15 = 18 : ?
  23. 23.Divide ₹350 between Nisha and Karan in the ratio 3 : 7. How much does Karan get (in ₹)?
  24. 24.1/6 of 54 + 3 × 7 =
  25. 25.Which is closest to 304 + 105 + 604? (a) 1100 (b) 1200 (c) 1000 (d) 900
  26. 26.4.2 ÷ 2 =
  27. 27.Divide ₹253 between Aarav and Arjun in the ratio 2 : 9. How much does Arjun get (in ₹)?
  28. 28.Dev takes 48 seconds and Farhan takes 54 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 percent of 40 is 36?
  30. 30.Find the third proportional to 7 and 28 (that is, 7 : 28 = 28 : ?).
  31. 31.What is the smallest number you must add to 892 so that it divides exactly by 8?
  32. 32.What is the smallest number you must add to 223 so that it divides exactly by 3?
  33. 33.6 : 7 = 36 : ?
  34. 34.A car goes 32 km on 4 litres of petrol. How far can it go on 14 litres (in km)?
  35. 35.Divide ₹90 between Ishaan and Aarav in the ratio 8 : 1. How much does Ishaan get (in ₹)?
  36. 36.How many factors does 62 have?
  37. 37.Which is closest to 203 × 39? (Round each number first.) (a) 800 (b) 16000 (c) 80000 (d) 8000
  38. 38.38 − 9 ÷ 3 × 5 =
  39. 39.22 + 9 × 3 − 16 =
  40. 40.A hall floor is 100 cm long and 80 cm wide. It is covered with the largest square tiles that fit exactly. How many tiles are needed?

Answer key

  1. 57
  2. 75
  3. 18
  4. 736
  5. 12
  6. 20
  7. 6
  8. 40
  9. 24
  10. 13/44
  11. 113
  12. 10
  13. 1
  14. 2
  15. 7
  16. 40
  17. 4/21
  18. 12
  19. 56
  20. 63
  21. 81
  22. 45
  23. 245
  24. 30
  25. 1000
  26. 2.1
  27. 207
  28. 432
  29. 90
  30. 112
  31. 4
  32. 2
  33. 42
  34. 112
  35. 80
  36. 4
  37. 8000
  38. 23
  39. 33
  40. 20

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