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Number Skills Practice Worksheet

Quantitative aptitude lesson 10: Practice: number skills · Set 176 · 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 HCF of 8 and 12.
  2. 2.84 ÷ 7 × 8 + 5 =
  3. 3.(10 + 13) × 9 − 10 =
  4. 4.Diya scored 12 marks out of 80 in a test. What percentage did Diya score?
  5. 5.Which is closest to 501 × 70? (Round each number first.) (a) 3500 (b) 350000 (c) 70000 (d) 35000
  6. 6.4 : 15 = 32 : ?
  7. 7.Three temple bells ring every 9, 5 and 18 minutes. They ring together at 9:00 am. After how many minutes will they next ring together?
  8. 8.22 ÷ 2 × 7 + 16 =
  9. 9.What is the smallest number you must take away from 135 so that it divides exactly by 13?
  10. 10.Write 18/25 as a percent.
  11. 11.Find the LCM of 6, 11 and 9.
  12. 12.How many factors does 72 have?
  13. 13.What is 1/5 of ₹75?
  14. 14.What is the smallest number you must add to 698 so that it divides exactly by 4?
  15. 15.Find the LCM of 35 and 45.
  16. 16.Find the LCM of 6, 4 and 9.
  17. 17.Three temple bells ring every 30, 15 and 12 minutes. They ring together at 9:00 am. After how many minutes will they next ring together?
  18. 18.4 ÷ 2 × 2 + 2 =
  19. 19.Round 89478 to the nearest ten.
  20. 20.Manav takes 50 seconds and Rohan takes 45 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?
  21. 21.Which is closest to 802 ÷ 39? (a) 10 (b) 40 (c) 200 (d) 20
  22. 22.What is the smallest number you must take away from 368 so that it divides exactly by 9?
  23. 23.63 − 49 ÷ 7 × 6 =
  24. 24.3/5 − 1/4 =
  25. 25.Find the third proportional to 3 and 12 (that is, 3 : 12 = 12 : ?).
  26. 26.If 2 mangoes cost ₹60, how much do 20 mangoes cost (in ₹)?
  27. 27.Which is closest to 700 + 598 + 702? (a) 2200 (b) 1900 (c) 2000 (d) 2100
  28. 28.16 ÷ 2 × 3 + 26 =
  29. 29.What is the smallest number you must add to 956 so that it divides exactly by 7?
  30. 30.Find the LCM of 4 and 5.
  31. 31.What is the smallest number you must take away from 427 so that it divides exactly by 9?
  32. 32.Two tanks hold 160 litres and 280 litres of milk. What is the biggest can (in litres) that can empty both tanks exactly, with no milk left over?
  33. 33.What is 150% of 164?
  34. 34.What is the smallest number you must add to 593 so that it divides exactly by 8?
  35. 35.The HCF of two numbers is 9 and their LCM is 54. One of the numbers is 18. What is the other number?
  36. 36.What is 5/6 of 48 kg?
  37. 37.Two tanks hold 135 litres and 105 litres of milk. What is the biggest can (in litres) that can empty both tanks exactly, with no milk left over?
  38. 38.What is the smallest number you must add to 173 so that it divides exactly by 7?
  39. 39.The ratio of boys to girls in a class is 5 : 8. There are 45 boys. How many girls are there?
  40. 40.Find the third proportional to 8 and 24 (that is, 8 : 24 = 24 : ?).

Answer key

  1. 4
  2. 101
  3. 197
  4. 15
  5. 35000
  6. 120
  7. 90
  8. 93
  9. 5
  10. 72
  11. 198
  12. 12
  13. 15
  14. 2
  15. 315
  16. 36
  17. 60
  18. 6
  19. 89480
  20. 450
  21. 20
  22. 8
  23. 21
  24. 7/20
  25. 48
  26. 600
  27. 2000
  28. 50
  29. 3
  30. 20
  31. 4
  32. 40
  33. 246
  34. 7
  35. 27
  36. 40
  37. 15
  38. 2
  39. 72
  40. 72

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