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Number Skills Practice Worksheet

Quantitative aptitude lesson 10: Practice: number skills · Set 596 · 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 901 × 42? (Round each number first.) (a) 360000 (b) 3600 (c) 36000 (d) 72000
  2. 2.What is the smallest number you must take away from 521 so that it divides exactly by 6?
  3. 3.Which of these numbers divides exactly by 9? (a) 1608 (b) 4734 (c) 6004 (d) 5837
  4. 4.The HCF of two numbers is 9 and their LCM is 162. One of the numbers is 18. What is the other number?
  5. 5.Round 14.44 to one decimal place. =
  6. 6.Round 23.42 to one decimal place. =
  7. 7.The HCF of two numbers is 4 and their LCM is 80. One of the numbers is 16. What is the other number?
  8. 8.Find the third proportional to 9 and 45 (that is, 9 : 45 = 45 : ?).
  9. 9.How many factors does 38 have?
  10. 10.If 7 kg of rice costs ₹406, how many kg can you buy for ₹812?
  11. 11.What is 60% of 530?
  12. 12.Divide ₹246 between Ananya and Pooja in the ratio 1 : 5. How much does Ananya get (in ₹)?
  13. 13.Kavya scored 5 marks out of 25 in a test. What percentage did Kavya score?
  14. 14.Two tanks hold 280 litres and 320 litres of milk. What is the biggest can (in litres) that can empty both tanks exactly, with no milk left over?
  15. 15.Find the LCM of 2, 13 and 7.
  16. 16.(12 + 6) × 8 − 12 =
  17. 17.Two tanks hold 40 litres and 25 litres of milk. What is the biggest can (in litres) that can empty both tanks exactly, with no milk left over?
  18. 18.Three temple bells ring every 30, 4 and 6 minutes. They ring together at 9:00 am. After how many minutes will they next ring together?
  19. 19.25% of a number is 96. What is the number?
  20. 20.Vivaan scored 8 marks out of 20 in a test. What percentage did Vivaan score?
  21. 21.12% of a number is 12. What is the number?
  22. 22.Which is closest to 803 + 402 + 902? (a) 2200 (b) 2100 (c) 2300 (d) 2000
  23. 23.What is the smallest number you must add to 190 so that it divides exactly by 6?
  24. 24.Find the third proportional to 6 and 24 (that is, 6 : 24 = 24 : ?).
  25. 25.47 − 28 ÷ 7 × 9 =
  26. 26.1/4 of 40 + 7 × 7 =
  27. 27.Find the third proportional to 5 and 25 (that is, 5 : 25 = 25 : ?).
  28. 28.The ratio of boys to girls in a class is 4 : 1. There are 40 boys. How many girls are there?
  29. 29.A hall floor is 210 cm long and 150 cm wide. It is covered with the largest square tiles that fit exactly. How many tiles are needed?
  30. 30.What is 150% of 40?
  31. 31.A hostel has enough food for 3 students for 27 days. How many days will the same food last for 9 students?
  32. 32.(4 + 20) × 7 − 18 =
  33. 33.4/5 × 1/2 =
  34. 34.Round 68.39 to one decimal place. =
  35. 35.6/9 × 1/2 =
  36. 36.What percent of 250 is 25?
  37. 37.Find the third proportional to 8 and 40 (that is, 8 : 40 = 40 : ?).
  38. 38.Two tanks hold 20 litres and 35 litres of milk. What is the biggest can (in litres) that can empty both tanks exactly, with no milk left over?
  39. 39.Which of these numbers divides exactly by 4? (a) 4640 (b) 7562 (c) 3119 (d) 5893
  40. 40.Which is closest to 698 × 29? (Round each number first.) (a) 2100 (b) 21000 (c) 42000 (d) 210000

Answer key

  1. 36000
  2. 5
  3. 4734
  4. 81
  5. 14.4
  6. 23.4
  7. 20
  8. 225
  9. 4
  10. 14
  11. 318
  12. 41
  13. 20
  14. 40
  15. 182
  16. 132
  17. 5
  18. 60
  19. 384
  20. 40
  21. 100
  22. 2100
  23. 2
  24. 96
  25. 11
  26. 59
  27. 125
  28. 10
  29. 35
  30. 60
  31. 9
  32. 150
  33. 2/5
  34. 68.4
  35. 1/3
  36. 10
  37. 200
  38. 5
  39. 4640
  40. 21000

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