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Number Skills Practice Worksheet

Quantitative aptitude lesson 10: Practice: number skills · Set 445 · 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 27 have?
  2. 2.The HCF of two numbers is 8 and their LCM is 360. One of the numbers is 72. What is the other number?
  3. 3.If 9 kg of rice costs ₹252, how many kg can you buy for ₹336?
  4. 4.Rohan takes 54 seconds and Vivaan takes 48 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?
  5. 5.Kavya scored 11 marks out of 20 in a test. What percentage did Kavya score?
  6. 6.Which is closest to 205 + 401 + 500? (a) 1100 (b) 1300 (c) 1200 (d) 1000
  7. 7.Divide ₹484 between Kavya and Kabir in the ratio 5 : 6. How much does Kavya get (in ₹)?
  8. 8.4 painters can paint a school in 13 days. How many days would 13 painters take, working at the same speed?
  9. 9.The HCF of two numbers is 4 and their LCM is 120. One of the numbers is 20. What is the other number?
  10. 10.Find the LCM of 21 and 27.
  11. 11.12 ÷ 2 × 3 + 24 =
  12. 12.Which is closest to 196 × 68? (Round each number first.) (a) 140000 (b) 14000 (c) 1400 (d) 28000
  13. 13.What percent of 80 is 4?
  14. 14.Find the third proportional to 6 and 12 (that is, 6 : 12 = 12 : ?).
  15. 15.If 9 bottles of juice cost ₹486, how much do 2 bottles of juice cost (in ₹)?
  16. 16.Divide ₹95 between Rahul and Pooja in the ratio 1 : 4. How much does Rahul get (in ₹)?
  17. 17.79 − 49 ÷ 7 × 7 =
  18. 18.The HCF of two numbers is 7 and their LCM is 252. One of the numbers is 63. What is the other number?
  19. 19.How many factors does 30 have?
  20. 20.What is 1/10 of 130 kg?
  21. 21.7 : 11 = 21 : ?
  22. 22.Find the LCM of 6 and 27.
  23. 23.Find the smallest number bigger than 15 that leaves a remainder of 4 when divided by 8, 5 or 15.
  24. 24.What is the smallest number you must add to 623 so that it divides exactly by 9?
  25. 25.44.5 ÷ 5 =
  26. 26.A hostel has enough food for 8 students for 16 days. How many days will the same food last for 16 students?
  27. 27.The ratio of boys to girls in a class is 7 : 1. There are 70 boys. How many girls are there?
  28. 28.Which is closest to 902 × 90? (Round each number first.) (a) 810000 (b) 81000 (c) 8100 (d) 162000
  29. 29.A hall floor is 280 cm long and 160 cm wide. It is covered with the largest square tiles that fit exactly. How many tiles are needed?
  30. 30.Find the LCM of 5, 9 and 4.
  31. 31.Find the third proportional to 3 and 6 (that is, 3 : 6 = 6 : ?).
  32. 32.Find the smallest number bigger than 12 that leaves a remainder of 3 when divided by 6, 12 or 10.
  33. 33.Find the LCM of 12, 6 and 4.
  34. 34.Which of these numbers divides exactly by 4? (a) 4902 (b) 5543 (c) 6003 (d) 1112
  35. 35.(18 + 11) × 4 − 23 =
  36. 36.If 4 bottles of juice cost ₹104, how much do 14 bottles of juice cost (in ₹)?
  37. 37.1/2 of 4 + 8 × 8 =
  38. 38.What percent of 25 is 5?
  39. 39.Round 95.69 to one decimal place. =
  40. 40.Three temple bells ring every 9, 18 and 15 minutes. They ring together at 9:00 am. After how many minutes will they next ring together?

Answer key

  1. 4
  2. 40
  3. 12
  4. 432
  5. 55
  6. 1100
  7. 220
  8. 4
  9. 24
  10. 189
  11. 42
  12. 14000
  13. 5
  14. 24
  15. 108
  16. 19
  17. 30
  18. 28
  19. 8
  20. 13
  21. 33
  22. 54
  23. 124
  24. 7
  25. 8.9
  26. 8
  27. 10
  28. 81000
  29. 28
  30. 180
  31. 12
  32. 63
  33. 12
  34. 1112
  35. 93
  36. 364
  37. 66
  38. 20
  39. 95.7
  40. 90

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