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Number Skills Practice Worksheet

Quantitative aptitude lesson 10: Practice: number skills · Set 751 · 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.How many factors does 31 have?
  2. 2.Two tanks hold 75 litres and 120 litres of milk. What is the biggest can (in litres) that can empty both tanks exactly, with no milk left over?
  3. 3.Which is closest to 202 × 79? (Round each number first.) (a) 16000 (b) 160000 (c) 32000 (d) 1600
  4. 4.Two tanks hold 15 litres and 10 litres of milk. What is the biggest can (in litres) that can empty both tanks exactly, with no milk left over?
  5. 5.Round 55093 to the nearest ten.
  6. 6.Which of these numbers divides exactly by 9? (a) 9593 (b) 6543 (c) 1144 (d) 5808
  7. 7.Round 84806 to the nearest thousand.
  8. 8.Three temple bells ring every 20, 12 and 5 minutes. They ring together at 9:00 am. After how many minutes will they next ring together?
  9. 9.What is the smallest number you must take away from 543 so that it divides exactly by 13?
  10. 10.Three temple bells ring every 6, 20 and 12 minutes. They ring together at 9:00 am. After how many minutes will they next ring together?
  11. 11.54 ÷ 9 × 3 + 8 =
  12. 12.7 : 15 = 21 : ?
  13. 13.10 : 3 = 40 : ?
  14. 14.16 ÷ 2 × 5 + 2 =
  15. 15.Round 30.86 to one decimal place. =
  16. 16.Which is closest to 599 + 597 + 100? (a) 1500 (b) 1200 (c) 1300 (d) 1400
  17. 17.A hall floor is 315 cm long and 225 cm wide. It is covered with the largest square tiles that fit exactly. How many tiles are needed?
  18. 18.Find the LCM of 2, 6 and 8.
  19. 19.Which of these numbers divides exactly by 6? (a) 2220 (b) 2879 (c) 1000 (d) 2625
  20. 20.Find the HCF of 45 and 25.
  21. 21.The ratio of boys to girls in a class is 7 : 2. There are 35 boys. How many girls are there?
  22. 22.The HCF of two numbers is 7 and their LCM is 147. One of the numbers is 21. What is the other number?
  23. 23.Ananya takes 50 seconds and Farhan takes 80 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?
  24. 24.(12 + 13) × 5 − 20 =
  25. 25.What is the smallest number you must take away from 559 so that it divides exactly by 11?
  26. 26.(5 + 6) × 7 − 6 =
  27. 27.Which is closest to 98 + 801 + 896? (a) 1900 (b) 2000 (c) 1700 (d) 1800
  28. 28.Find the smallest number bigger than 12 that leaves a remainder of 1 when divided by 4, 3 or 12.
  29. 29.Which is closest to 704 + 696 + 405? (a) 1900 (b) 1700 (c) 2000 (d) 1800
  30. 30.If 9 kg of rice costs ₹270, how many kg can you buy for ₹330?
  31. 31.Rahul scored 32 marks out of 80 in a test. What percentage did Rahul score?
  32. 32.Round 33.22 to one decimal place. =
  33. 33.Find the smallest number bigger than 9 that leaves a remainder of 2 when divided by 6, 9 or 5.
  34. 34.What is 1/7 of ₹147?
  35. 35.12 ÷ 4 × 5 + 2 =
  36. 36.2/5 of 55 + 6 × 8 =
  37. 37.Find the HCF of 33 and 22.
  38. 38.Which is closest to 897 × 59? (Round each number first.) (a) 54000 (b) 5400 (c) 540000 (d) 108000
  39. 39.Two tanks hold 180 litres and 210 litres of milk. What is the biggest can (in litres) that can empty both tanks exactly, with no milk left over?
  40. 40.Find the LCM of 5, 7 and 10.

Answer key

  1. 2
  2. 15
  3. 16000
  4. 5
  5. 55090
  6. 6543
  7. 85000
  8. 60
  9. 10
  10. 60
  11. 26
  12. 45
  13. 12
  14. 42
  15. 30.9
  16. 1300
  17. 35
  18. 24
  19. 2220
  20. 5
  21. 10
  22. 49
  23. 400
  24. 105
  25. 9
  26. 71
  27. 1800
  28. 13
  29. 1800
  30. 11
  31. 40
  32. 33.2
  33. 92
  34. 21
  35. 17
  36. 70
  37. 11
  38. 54000
  39. 30
  40. 70

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