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Number Skills Practice Worksheet

Quantitative aptitude lesson 10: Practice: number skills · Set 660 · 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 75% of 516?
  2. 2.Which is closest to 801 × 59? (Round each number first.) (a) 48000 (b) 4800 (c) 96000 (d) 480000
  3. 3.Three temple bells ring every 5, 8 and 6 minutes. They ring together at 9:00 am. After how many minutes will they next ring together?
  4. 4.40 ÷ 4 × 3 + 20 =
  5. 5.5/7 − 2/4 =
  6. 6.A hostel has enough food for 4 students for 5 days. How many days will the same food last for 2 students?
  7. 7.A car goes 90 km on 6 litres of petrol. How far can it go on 21 litres (in km)?
  8. 8.Find the HCF of 28 and 12.
  9. 9.Find the HCF of 28 and 8.
  10. 10.Three temple bells ring every 4, 30 and 6 minutes. They ring together at 9:00 am. After how many minutes will they next ring together?
  11. 11.Find the LCM of 15 and 40.
  12. 12.11 painters can paint a school in 7 days. How many days would 7 painters take, working at the same speed?
  13. 13.A hall floor is 200 cm long and 160 cm wide. It is covered with the largest square tiles that fit exactly. How many tiles are needed?
  14. 14.A hall floor is 90 cm long and 60 cm wide. It is covered with the largest square tiles that fit exactly. How many tiles are needed?
  15. 15.What is 2/3 of 33 students?
  16. 16.Find the third proportional to 2 and 8 (that is, 2 : 8 = 8 : ?).
  17. 17.The HCF of two numbers is 6 and their LCM is 90. One of the numbers is 18. What is the other number?
  18. 18.1/7 + 2/4 =
  19. 19.4/10 + 3/9 =
  20. 20.Which of these numbers divides exactly by 4? (a) 4341 (b) 3258 (c) 7582 (d) 1680
  21. 21.How many factors does 32 have?
  22. 22.Which of these numbers divides exactly by 4? (a) 2364 (b) 1227 (c) 9982 (d) 8893
  23. 23.Round 26.12 to one decimal place. =
  24. 24.8.51 + 9.9 =
  25. 25.1/7 + 5/10 =
  26. 26.If 7 pencil boxes cost ₹259, how much do 9 pencil boxes cost (in ₹)?
  27. 27.Which is closest to 396 × 79? (Round each number first.) (a) 320000 (b) 32000 (c) 3200 (d) 64000
  28. 28.1/2 of 14 + 6 × 6 =
  29. 29.Round 55516 to the nearest ten.
  30. 30.Dev scored 14 marks out of 40 in a test. What percentage did Dev score?
  31. 31.Two tanks hold 100 litres and 120 litres of milk. What is the biggest can (in litres) that can empty both tanks exactly, with no milk left over?
  32. 32.12 + 5 × 5 − 2 =
  33. 33.Rohan scored 45 marks out of 50 in a test. What percentage did Rohan score?
  34. 34.Which is closest to 899 × 69? (Round each number first.) (a) 63000 (b) 6300 (c) 126000 (d) 630000
  35. 35.How many factors does 37 have?
  36. 36.1/2 + 4/6 =
  37. 37.What is the smallest number you must add to 157 so that it divides exactly by 12?
  38. 38.Divide ₹119 between Ananya and Diya in the ratio 2 : 5. How much does Diya get (in ₹)?
  39. 39.Divide ₹510 between Diya and Nisha in the ratio 9 : 8. How much does Nisha get (in ₹)?
  40. 40.Which of these numbers divides exactly by 4? (a) 4871 (b) 8221 (c) 3976 (d) 1487

Answer key

  1. 387
  2. 48000
  3. 120
  4. 50
  5. 3/14
  6. 10
  7. 315
  8. 4
  9. 4
  10. 60
  11. 120
  12. 11
  13. 20
  14. 6
  15. 22
  16. 32
  17. 30
  18. 9/14
  19. 11/15
  20. 1680
  21. 6
  22. 2364
  23. 26.1
  24. 18.41
  25. 9/14
  26. 333
  27. 32000
  28. 43
  29. 55520
  30. 35
  31. 20
  32. 35
  33. 90
  34. 63000
  35. 2
  36. 7/6
  37. 11
  38. 85
  39. 240
  40. 3976

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