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Number Skills Practice Worksheet

Quantitative aptitude lesson 10: Practice: number skills · Set 251 · 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. 1.6 ÷ 2 × 5 + 14 =
  2. 2.How many factors does 36 have?
  3. 3.9.94 + 1.5 =
  4. 4.Which is closest to 904 + 295 + 802? (a) 2100 (b) 2000 (c) 2200 (d) 1900
  5. 5.Three temple bells ring every 24, 15 and 10 minutes. They ring together at 9:00 am. After how many minutes will they next ring together?
  6. 6.Three temple bells ring every 12, 9 and 8 minutes. They ring together at 9:00 am. After how many minutes will they next ring together?
  7. 7.What is the smallest number you must add to 497 so that it divides exactly by 6?
  8. 8.Which is closest to 303 × 29? (Round each number first.) (a) 18000 (b) 900 (c) 9000 (d) 90000
  9. 9.The HCF of two numbers is 9 and their LCM is 162. One of the numbers is 18. What is the other number?
  10. 10.1/5 of 15 + 3 × 3 =
  11. 11.Find the LCM of 3, 15 and 13.
  12. 12.1/3 of 6 + 8 × 9 =
  13. 13.30 − 14 ÷ 7 × 3 =
  14. 14.2/5 of 10 + 3 × 7 =
  15. 15.Round 56740 to the nearest hundred.
  16. 16.40% of a number is 6. What is the number?
  17. 17.Find the third proportional to 5 and 10 (that is, 5 : 10 = 10 : ?).
  18. 18.Find the LCM of 15, 4 and 5.
  19. 19.What is 15% of 120?
  20. 20.Which is closest to 304 × 20? (Round each number first.) (a) 60000 (b) 12000 (c) 600 (d) 6000
  21. 21.The ratio of boys to girls in a class is 9 : 8. There are 72 boys. How many girls are there?
  22. 22.If 3 kg of rice costs ₹123, how many kg can you buy for ₹533?
  23. 23.14 ÷ 7 × 5 + 5 =
  24. 24.6 × (27 − 16) + 14 ÷ 2 =
  25. 25.Which is closest to 701 + 805 + 701? (a) 2300 (b) 2200 (c) 2100 (d) 2400
  26. 26.17 − 24 ÷ 6 × 3 =
  27. 27.Three temple bells ring every 6, 5 and 10 minutes. They ring together at 9:00 am. After how many minutes will they next ring together?
  28. 28.Find the smallest number bigger than 15 that leaves a remainder of 3 when divided by 5, 4 or 15.
  29. 29.Which is closest to 204 × 88? (Round each number first.) (a) 36000 (b) 1800 (c) 18000 (d) 180000
  30. 30.Divide ₹100 between Nisha and Rohan in the ratio 3 : 7. How much does Rohan get (in ₹)?
  31. 31.Find the LCM of 6, 13 and 3.
  32. 32.What is the smallest number you must take away from 574 so that it divides exactly by 9?
  33. 33.Isha scored 17 marks out of 25 in a test. What percentage did Isha score?
  34. 34.Which of these numbers divides exactly by 4? (a) 4959 (b) 1924 (c) 6533 (d) 3117
  35. 35.Two tanks hold 50 litres and 30 litres of milk. What is the biggest can (in litres) that can empty both tanks exactly, with no milk left over?
  36. 36.What is the smallest number you must add to 850 so that it divides exactly by 7?
  37. 37.A car goes 63 km on 7 litres of petrol. How far can it go on 18 litres (in km)?
  38. 38.Round 55.22 to one decimal place. =
  39. 39.Round 68.08 to one decimal place. =
  40. 40.Which is closest to 1492 ÷ 51? (a) 60 (b) 15 (c) 30 (d) 300

Answer key

  1. 29
  2. 9
  3. 11.44
  4. 2000
  5. 120
  6. 72
  7. 1
  8. 9000
  9. 81
  10. 12
  11. 195
  12. 74
  13. 24
  14. 25
  15. 56700
  16. 15
  17. 20
  18. 60
  19. 18
  20. 6000
  21. 64
  22. 13
  23. 15
  24. 73
  25. 2200
  26. 5
  27. 30
  28. 63
  29. 18000
  30. 70
  31. 78
  32. 7
  33. 68
  34. 1924
  35. 10
  36. 4
  37. 162
  38. 55.2
  39. 68.1
  40. 30

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