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Number Skills Practice Worksheet

Quantitative aptitude lesson 10: Practice: number skills · Set 318 · 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.Which of these numbers divides exactly by 4? (a) 1639 (b) 1821 (c) 7852 (d) 7170
  2. 2.Find the smallest number bigger than 15 that leaves a remainder of 1 when divided by 15, 9 or 3.
  3. 3.4 painters can paint a school in 8 days. How many days would 2 painters take, working at the same speed?
  4. 4.The ratio of boys to girls in a class is 4 : 9. There are 24 boys. How many girls are there?
  5. 5.Which is closest to 903 × 38? (Round each number first.) (a) 36000 (b) 3600 (c) 360000 (d) 72000
  6. 6.Round 7742 to the nearest hundred.
  7. 7.Find the LCM of 18 and 21.
  8. 8.How many factors does 28 have?
  9. 9.How many factors does 27 have?
  10. 10.If 2 kg of rice costs ₹110, how many kg can you buy for ₹330?
  11. 11.Three temple bells ring every 10, 12 and 8 minutes. They ring together at 9:00 am. After how many minutes will they next ring together?
  12. 12.Divide ₹418 between Rahul and Aditya in the ratio 8 : 3. How much does Aditya get (in ₹)?
  13. 13.Find the LCM of 9, 6 and 4.
  14. 14.The HCF of two numbers is 5 and their LCM is 60. One of the numbers is 20. What is the other number?
  15. 15.Find the LCM of 30 and 24.
  16. 16.56 ÷ 8 × 8 + 20 =
  17. 17.Find the LCM of 35 and 25.
  18. 18.If 8 kg of rice costs ₹160, how many kg can you buy for ₹180?
  19. 19.What is the smallest number you must take away from 429 so that it divides exactly by 6?
  20. 20.3/5 of 20 + 4 × 6 =
  21. 21.Round 48148 to the nearest ten.
  22. 22.Which is closest to 901 + 801 + 696? (a) 2300 (b) 2400 (c) 2500 (d) 2600
  23. 23.Two tanks hold 175 litres and 150 litres of milk. What is the biggest can (in litres) that can empty both tanks exactly, with no milk left over?
  24. 24.What is the smallest number you must take away from 677 so that it divides exactly by 9?
  25. 25.Which of these numbers divides exactly by 3? (a) 1541 (b) 6155 (c) 3179 (d) 3441
  26. 26.81 ÷ 9 × 9 + 3 =
  27. 27.A car goes 56 km on 7 litres of petrol. How far can it go on 25 litres (in km)?
  28. 28.Find the LCM of 15, 12 and 4.
  29. 29.How many factors does 29 have?
  30. 30.What is the smallest number you must add to 696 so that it divides exactly by 7?
  31. 31.Two tanks hold 20 litres and 25 litres of milk. What is the biggest can (in litres) that can empty both tanks exactly, with no milk left over?
  32. 32.7/11 × 5/6 =
  33. 33.What is 40% of 515?
  34. 34.How many factors does 68 have?
  35. 35.Which is closest to 501 + 496 + 897? (a) 1900 (b) 2000 (c) 1800 (d) 2100
  36. 36.5 × (20 − 6) + 81 ÷ 9 =
  37. 37.Find the LCM of 45 and 40.
  38. 38.Find the HCF of 22 and 33.
  39. 39.80 − 56 ÷ 7 × 9 =
  40. 40.Find the LCM of 15 and 21.

Answer key

  1. 7852
  2. 46
  3. 16
  4. 54
  5. 36000
  6. 7700
  7. 126
  8. 6
  9. 4
  10. 6
  11. 120
  12. 114
  13. 36
  14. 15
  15. 120
  16. 76
  17. 175
  18. 9
  19. 3
  20. 36
  21. 48150
  22. 2400
  23. 25
  24. 2
  25. 3441
  26. 84
  27. 200
  28. 60
  29. 2
  30. 4
  31. 5
  32. 35/66
  33. 206
  34. 6
  35. 1900
  36. 79
  37. 360
  38. 11
  39. 8
  40. 105

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