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Number Skills Practice Worksheet

Quantitative aptitude lesson 10: Practice: number skills · Set 841 · 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 is closest to 995 ÷ 51? (a) 200 (b) 20 (c) 40 (d) 10
  2. 2.The HCF of two numbers is 6 and their LCM is 144. One of the numbers is 18. What is the other number?
  3. 3.A car goes 92 km on 4 litres of petrol. How far can it go on 23 litres (in km)?
  4. 4.What is the smallest number you must add to 555 so that it divides exactly by 9?
  5. 5.8/9 of 63 + 9 × 6 =
  6. 6.Find the LCM of 4, 3 and 12.
  7. 7.What percent of 20 is 3?
  8. 8.3/4 of 40 + 7 × 2 =
  9. 9.What is the smallest number you must add to 732 so that it divides exactly by 9?
  10. 10.Find the HCF of 28 and 70.
  11. 11.(20 + 12) × 3 − 3 =
  12. 12.What is the smallest number you must add to 593 so that it divides exactly by 8?
  13. 13.What is the smallest number you must add to 839 so that it divides exactly by 9?
  14. 14.Find the HCF of 6 and 21.
  15. 15.The HCF of two numbers is 6 and their LCM is 432. One of the numbers is 48. What is the other number?
  16. 16.A hall floor is 280 cm long and 120 cm wide. It is covered with the largest square tiles that fit exactly. How many tiles are needed?
  17. 17.The ratio of boys to girls in a class is 5 : 2. There are 30 boys. How many girls are there?
  18. 18.The HCF of two numbers is 7 and their LCM is 126. One of the numbers is 63. What is the other number?
  19. 19.Two tanks hold 70 litres and 90 litres of milk. What is the biggest can (in litres) that can empty both tanks exactly, with no milk left over?
  20. 20.How many factors does 85 have?
  21. 21.Two tanks hold 100 litres and 450 litres of milk. What is the biggest can (in litres) that can empty both tanks exactly, with no milk left over?
  22. 22.What is the smallest number you must take away from 997 so that it divides exactly by 11?
  23. 23.Find the HCF of 30 and 40.
  24. 24.A hall floor is 175 cm long and 50 cm wide. It is covered with the largest square tiles that fit exactly. How many tiles are needed?
  25. 25.Write 3/5 as a percent.
  26. 26.Round 34563 to the nearest hundred.
  27. 27.What is 5/6 of 180 km?
  28. 28.28 − 15 ÷ 3 × 4 =
  29. 29.If 9 kg of rice costs ₹459, how many kg can you buy for ₹612?
  30. 30.Three temple bells ring every 4, 15 and 12 minutes. They ring together at 9:00 am. After how many minutes will they next ring together?
  31. 31.Find the smallest number bigger than 15 that leaves a remainder of 2 when divided by 3, 4 or 15.
  32. 32.48 ÷ 4 × 2 + 23 =
  33. 33.50% of a number is 129. What is the number?
  34. 34.What is 3/4 of 60 km?
  35. 35.Which of these numbers divides exactly by 8? (a) 1480 (b) 1670 (c) 2707 (d) 8634
  36. 36.Which is closest to 297 × 90? (Round each number first.) (a) 270000 (b) 27000 (c) 2700 (d) 54000
  37. 37.Find the HCF of 25 and 30.
  38. 38.11 + 6 × 12 − 2 =
  39. 39.The HCF of two numbers is 5 and their LCM is 70. One of the numbers is 35. What is the other number?
  40. 40.Two tanks hold 160 litres and 180 litres of milk. What is the biggest can (in litres) that can empty both tanks exactly, with no milk left over?

Answer key

  1. 20
  2. 48
  3. 529
  4. 3
  5. 110
  6. 12
  7. 15
  8. 44
  9. 6
  10. 14
  11. 93
  12. 7
  13. 7
  14. 3
  15. 54
  16. 21
  17. 12
  18. 14
  19. 10
  20. 4
  21. 50
  22. 7
  23. 10
  24. 14
  25. 60
  26. 34600
  27. 150
  28. 8
  29. 12
  30. 60
  31. 62
  32. 47
  33. 258
  34. 45
  35. 1480
  36. 27000
  37. 5
  38. 81
  39. 10
  40. 20

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