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Number Skills Practice Worksheet

Quantitative aptitude lesson 10: Practice: number skills · Set 683 · 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.What is the smallest number you must add to 111 so that it divides exactly by 12?
  2. 2.Find the HCF of 91 and 39.
  3. 3.Round 45960 to the nearest hundred.
  4. 4.Find the LCM of 42 and 18.
  5. 5.1/3 of 12 + 2 × 3 =
  6. 6.What is the smallest number you must take away from 448 so that it divides exactly by 11?
  7. 7.2 painters can paint a school in 14 days. How many days would 4 painters take, working at the same speed?
  8. 8.Round 23041 to the nearest thousand.
  9. 9.20 + 12 × 9 − 4 =
  10. 10.3 × (30 − 13) + 32 ÷ 4 =
  11. 11.Which of these numbers divides exactly by 11? (a) 2607 (b) 4292 (c) 5377 (d) 9228
  12. 12.Which of these numbers divides exactly by 11? (a) 5049 (b) 8215 (c) 6826 (d) 3252
  13. 13.How many factors does 82 have?
  14. 14.What percent of 400 is 128?
  15. 15.Find the LCM of 6 and 7.
  16. 16.Write 3/4 as a percent.
  17. 17.4.16 + 2.7 =
  18. 18.What is the smallest number you must add to 946 so that it divides exactly by 7?
  19. 19.Meera scored 6 marks out of 25 in a test. What percentage did Meera score?
  20. 20.Which is closest to 200 × 88? (Round each number first.) (a) 36000 (b) 180000 (c) 18000 (d) 1800
  21. 21.4 × (29 − 7) + 36 ÷ 3 =
  22. 22.Which of these numbers divides exactly by 9? (a) 7661 (b) 3029 (c) 2160 (d) 6749
  23. 23.How many factors does 43 have?
  24. 24.The ratio of boys to girls in a class is 2 : 3. There are 20 boys. How many girls are there?
  25. 25.Nisha takes 45 seconds and Aarav 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?
  26. 26.What is the smallest number you must take away from 439 so that it divides exactly by 11?
  27. 27.Find the HCF of 108 and 96.
  28. 28.The HCF of two numbers is 7 and their LCM is 392. One of the numbers is 56. What is the other number?
  29. 29.Round 64.11 to one decimal place. =
  30. 30.Two tanks hold 80 litres and 90 litres of milk. What is the biggest can (in litres) that can empty both tanks exactly, with no milk left over?
  31. 31.Find the HCF of 21 and 14.
  32. 32.If 10 cricket balls cost ₹560, how much do 15 cricket balls cost (in ₹)?
  33. 33.2 × (13 − 11) + 12 ÷ 6 =
  34. 34.Round 26698 to the nearest thousand.
  35. 35.Round 15.64 to one decimal place. =
  36. 36.46 + 5 × 12 − 7 =
  37. 37.Find the HCF of 90 and 20.
  38. 38.Which is closest to 702 × 59? (Round each number first.) (a) 420000 (b) 42000 (c) 84000 (d) 4200
  39. 39.70 ÷ 7 × 9 + 16 =
  40. 40.Which is closest to 1602 ÷ 21? (a) 800 (b) 160 (c) 80 (d) 40

Answer key

  1. 9
  2. 13
  3. 46000
  4. 126
  5. 10
  6. 8
  7. 7
  8. 23000
  9. 124
  10. 59
  11. 2607
  12. 5049
  13. 4
  14. 32
  15. 42
  16. 75
  17. 6.86
  18. 6
  19. 24
  20. 18000
  21. 100
  22. 2160
  23. 2
  24. 30
  25. 450
  26. 10
  27. 12
  28. 49
  29. 64.1
  30. 10
  31. 7
  32. 840
  33. 6
  34. 27000
  35. 15.6
  36. 99
  37. 10
  38. 42000
  39. 106
  40. 80

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