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Number Skills Practice Worksheet

Quantitative aptitude lesson 10: Practice: number skills · Set 148 · 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.Find the LCM of 15, 14 and 10.
  2. 2.Find the HCF of 30 and 48.
  3. 3.How many factors does 75 have?
  4. 4.Which of these numbers divides exactly by 8? (a) 1158 (b) 3318 (c) 3024 (d) 3449
  5. 5.50 + 6 × 2 − 17 =
  6. 6.What is the smallest number you must take away from 716 so that it divides exactly by 7?
  7. 7.What is the smallest number you must add to 139 so that it divides exactly by 3?
  8. 8.What is the smallest number you must add to 289 so that it divides exactly by 6?
  9. 9.What percent of 80 is 36?
  10. 10.What is the smallest number you must add to 260 so that it divides exactly by 8?
  11. 11.What percent of 400 is 268?
  12. 12.3 × (22 − 14) + 12 ÷ 2 =
  13. 13.2 × (19 − 10) + 72 ÷ 8 =
  14. 14.What is 30% of 420?
  15. 15.What is 5% of 500?
  16. 16.The HCF of two numbers is 2 and their LCM is 60. One of the numbers is 10. What is the other number?
  17. 17.Which is closest to 1608 ÷ 39? (a) 80 (b) 400 (c) 40 (d) 20
  18. 18.35 − 20 ÷ 4 × 3 =
  19. 19.27 + 6 × 3 − 14 =
  20. 20.Two tanks hold 90 litres and 70 litres of milk. What is the biggest can (in litres) that can empty both tanks exactly, with no milk left over?
  21. 21.12 painters can paint a school in 12 days. How many days would 18 painters take, working at the same speed?
  22. 22.If 4 mangoes cost ₹188, how much do 16 mangoes cost (in ₹)?
  23. 23.What is 8/9 of 144 km?
  24. 24.Which is closest to 299 × 52? (Round each number first.) (a) 150000 (b) 1500 (c) 30000 (d) 15000
  25. 25.What is the smallest number you must add to 383 so that it divides exactly by 4?
  26. 26.Which is closest to 98 + 97 + 296? (a) 400 (b) 500 (c) 600 (d) 700
  27. 27.Find the LCM of 6, 3 and 12.
  28. 28.38 + 2 × 5 − 5 =
  29. 29.What percent of 200 is 40?
  30. 30.1/11 + 9/12 =
  31. 31.A car goes 76 km on 4 litres of petrol. How far can it go on 35 litres (in km)?
  32. 32.Ishaan takes 45 seconds and Priya 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?
  33. 33.What is the smallest number you must add to 284 so that it divides exactly by 9?
  34. 34.Which is closest to 3003 ÷ 51? (a) 120 (b) 60 (c) 30 (d) 600
  35. 35.Which of these numbers divides exactly by 3? (a) 5366 (b) 1246 (c) 7152 (d) 3593
  36. 36.Find the LCM of 6 and 4.
  37. 37.Find the HCF of 120 and 75.
  38. 38.Find the third proportional to 3 and 9 (that is, 3 : 9 = 9 : ?).
  39. 39.34.8 ÷ 4 =
  40. 40.If 3 pencil boxes cost ₹48, how much do 18 pencil boxes cost (in ₹)?

Answer key

  1. 210
  2. 6
  3. 6
  4. 3024
  5. 45
  6. 2
  7. 2
  8. 5
  9. 45
  10. 4
  11. 67
  12. 30
  13. 27
  14. 126
  15. 25
  16. 12
  17. 40
  18. 20
  19. 31
  20. 10
  21. 8
  22. 752
  23. 128
  24. 15000
  25. 1
  26. 500
  27. 12
  28. 43
  29. 20
  30. 37/44
  31. 665
  32. 450
  33. 4
  34. 60
  35. 7152
  36. 12
  37. 15
  38. 27
  39. 8.7
  40. 288

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