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Number Skills Practice Worksheet

Quantitative aptitude lesson 10: Practice: number skills · Set 443 · 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. 1.4/5 − 1/3 =
  2. 2.The HCF of two numbers is 9 and their LCM is 162. One of the numbers is 18. What is the other number?
  3. 3.What percent of 40 is 20?
  4. 4.Which of these numbers divides exactly by 11? (a) 2431 (b) 1424 (c) 3160 (d) 2161
  5. 5.Divide ₹156 between Karan and Saanvi in the ratio 1 : 2. How much does Karan get (in ₹)?
  6. 6.2/11 × 2/9 =
  7. 7.Find the third proportional to 3 and 15 (that is, 3 : 15 = 15 : ?).
  8. 8.A car goes 80 km on 4 litres of petrol. How far can it go on 39 litres (in km)?
  9. 9.If 3 pencil boxes cost ₹174, how much do 11 pencil boxes cost (in ₹)?
  10. 10.If 10 cricket balls cost ₹490, how much do 13 cricket balls cost (in ₹)?
  11. 11.77 − 18 ÷ 2 × 7 =
  12. 12.Which is closest to 899 × 72? (Round each number first.) (a) 6300 (b) 63000 (c) 630000 (d) 126000
  13. 13.38 + 6 × 12 − 14 =
  14. 14.1/3 of 15 + 3 × 4 =
  15. 15.Dev scored 12 marks out of 80 in a test. What percentage did Dev score?
  16. 16.What percent of 400 is 36?
  17. 17.What is the smallest number you must take away from 912 so that it divides exactly by 13?
  18. 18.Find the LCM of 10, 12 and 8.
  19. 19.Which is closest to 1194 ÷ 19? (a) 30 (b) 120 (c) 600 (d) 60
  20. 20.How many factors does 77 have?
  21. 21.7/11 × 1/5 =
  22. 22.What is 1/2 of 46 litres?
  23. 23.Find the smallest number bigger than 15 that leaves a remainder of 3 when divided by 5, 4 or 15.
  24. 24.90 − 12 ÷ 2 × 9 =
  25. 25.The HCF of two numbers is 9 and their LCM is 216. One of the numbers is 72. What is the other number?
  26. 26.Find the LCM of 2, 7 and 3.
  27. 27.Ishaan takes 45 seconds and Pooja 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?
  28. 28.Round 18.23 to one decimal place. =
  29. 29.Which is closest to 497 × 42? (Round each number first.) (a) 20000 (b) 40000 (c) 200000 (d) 2000
  30. 30.How many factors does 72 have?
  31. 31.19.4 ÷ 2 =
  32. 32.Divide ₹306 between Manav and Nisha in the ratio 1 : 8. How much does Nisha get (in ₹)?
  33. 33.15% of a number is 18. What is the number?
  34. 34.Find the HCF of 30 and 42.
  35. 35.15 + 12 × 11 − 10 =
  36. 36.Find the LCM of 4, 2 and 6.
  37. 37.Which is closest to 304 × 31? (Round each number first.) (a) 90000 (b) 900 (c) 9000 (d) 18000
  38. 38.Which of these numbers divides exactly by 9? (a) 8759 (b) 9585 (c) 1271 (d) 1883
  39. 39.3.8 × 2 =
  40. 40.3 × (29 − 7) + 20 ÷ 5 =

Answer key

  1. 7/15
  2. 81
  3. 50
  4. 2431
  5. 52
  6. 4/99
  7. 75
  8. 780
  9. 638
  10. 637
  11. 14
  12. 63000
  13. 96
  14. 17
  15. 15
  16. 9
  17. 2
  18. 120
  19. 60
  20. 4
  21. 7/55
  22. 23
  23. 63
  24. 36
  25. 27
  26. 42
  27. 90
  28. 18.2
  29. 20000
  30. 12
  31. 9.7
  32. 272
  33. 120
  34. 6
  35. 137
  36. 12
  37. 9000
  38. 9585
  39. 7.6
  40. 70

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