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Number Skills Practice Worksheet

Quantitative aptitude lesson 10: Practice: number skills · Set 397 · 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.Find the LCM of 7 and 8.
  2. 2.Which of these numbers divides exactly by 4? (a) 9440 (b) 8305 (c) 2085 (d) 8258
  3. 3.The ratio of boys to girls in a class is 7 : 8. There are 70 boys. How many girls are there?
  4. 4.Zoya takes 50 seconds and Kabir takes 90 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.Which is closest to 297 × 72? (Round each number first.) (a) 42000 (b) 210000 (c) 21000 (d) 2100
  6. 6.What is 1/3 of ₹90?
  7. 7.Find the LCM of 14 and 16.
  8. 8.The HCF of two numbers is 6 and their LCM is 36. One of the numbers is 18. What is the other number?
  9. 9.8 painters can paint a school in 12 days. How many days would 16 painters take, working at the same speed?
  10. 10.Divide ₹126 between Farhan and Kabir in the ratio 1 : 2. How much does Kabir get (in ₹)?
  11. 11.9.43 + 1.4 =
  12. 12.A hall floor is 100 cm long and 60 cm wide. It is covered with the largest square tiles that fit exactly. How many tiles are needed?
  13. 13.If 4 mangoes cost ₹88, how much do 6 mangoes cost (in ₹)?
  14. 14.Which of these numbers divides exactly by 4? (a) 7440 (b) 4247 (c) 6618 (d) 1194
  15. 15.Write 1/5 as a percent.
  16. 16.15 ÷ 5 × 4 + 28 =
  17. 17.Divide ₹121 between Karan and Arjun in the ratio 5 : 6. How much does Arjun get (in ₹)?
  18. 18.Find the LCM of 5, 10 and 12.
  19. 19.Find the HCF of 48 and 108.
  20. 20.Divide ₹385 between Sneha and Ananya in the ratio 3 : 4. How much does Ananya get (in ₹)?
  21. 21.The HCF of two numbers is 4 and their LCM is 40. One of the numbers is 20. What is the other number?
  22. 22.What is the smallest number you must add to 967 so that it divides exactly by 12?
  23. 23.Three temple bells ring every 4, 30 and 24 minutes. They ring together at 9:00 am. After how many minutes will they next ring together?
  24. 24.Find the HCF of 70 and 30.
  25. 25.If 7 bottles of juice cost ₹154, how much do 4 bottles of juice cost (in ₹)?
  26. 26.1/3 × 6/12 =
  27. 27.10/12 × 3/4 =
  28. 28.If 5 kites cost ₹60, how much do 18 kites cost (in ₹)?
  29. 29.What percent of 25 is 13?
  30. 30.150% of a number is 204. What is the number?
  31. 31.Which is closest to 904 × 21? (Round each number first.) (a) 36000 (b) 18000 (c) 180000 (d) 1800
  32. 32.A car goes 132 km on 6 litres of petrol. How far can it go on 7 litres (in km)?
  33. 33.If 2 cricket balls cost ₹30, how much do 12 cricket balls cost (in ₹)?
  34. 34.56 ÷ 8 × 4 + 30 =
  35. 35.1/3 of 30 + 3 × 4 =
  36. 36.8 ÷ 4 × 7 + 7 =
  37. 37.Round 79990 to the nearest thousand.
  38. 38.Which of these numbers divides exactly by 8? (a) 1300 (b) 9432 (c) 1103 (d) 2691
  39. 39.36 + 10 × 8 − 33 =
  40. 40.What is the smallest number you must take away from 822 so that it divides exactly by 11?

Answer key

  1. 56
  2. 9440
  3. 80
  4. 450
  5. 21000
  6. 30
  7. 112
  8. 12
  9. 6
  10. 84
  11. 10.83
  12. 15
  13. 132
  14. 7440
  15. 20
  16. 40
  17. 66
  18. 60
  19. 12
  20. 220
  21. 8
  22. 5
  23. 120
  24. 10
  25. 88
  26. 1/6
  27. 5/8
  28. 216
  29. 52
  30. 136
  31. 18000
  32. 154
  33. 180
  34. 58
  35. 22
  36. 21
  37. 80000
  38. 9432
  39. 83
  40. 8

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