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Number Skills Practice Worksheet

Quantitative aptitude lesson 10: Practice: number skills · Set 275 · 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.A hostel has enough food for 12 students for 7 days. How many days will the same food last for 14 students?
  2. 2.Two tanks hold 240 litres and 280 litres of milk. What is the biggest can (in litres) that can empty both tanks exactly, with no milk left over?
  3. 3.Round 24252 to the nearest hundred.
  4. 4.Find the LCM of 8 and 18.
  5. 5.7 : 9 = 21 : ?
  6. 6.What is the smallest number you must add to 735 so that it divides exactly by 11?
  7. 7.12 − 24 ÷ 8 × 3 =
  8. 8.Zoya scored 16 marks out of 20 in a test. What percentage did Zoya score?
  9. 9.The HCF of two numbers is 8 and their LCM is 448. One of the numbers is 56. What is the other number?
  10. 10.Ishaan scored 21 marks out of 25 in a test. What percentage did Ishaan score?
  11. 11.72 ÷ 9 × 2 + 11 =
  12. 12.7.63 + 1.6 =
  13. 13.Find the LCM of 15, 4 and 5.
  14. 14.A car goes 18 km on 2 litres of petrol. How far can it go on 11 litres (in km)?
  15. 15.Divide ₹500 between Ananya and Diya in the ratio 3 : 7. How much does Diya get (in ₹)?
  16. 16.18.8 ÷ 4 =
  17. 17.What is the smallest number you must take away from 231 so that it divides exactly by 12?
  18. 18.Vivaan takes 54 seconds and Sneha takes 30 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?
  19. 19.Which is closest to 798 × 60? (Round each number first.) (a) 4800 (b) 48000 (c) 96000 (d) 480000
  20. 20.9 × (15 − 3) + 35 ÷ 5 =
  21. 21.Find the LCM of 3 and 8.
  22. 22.What is the smallest number you must add to 208 so that it divides exactly by 6?
  23. 23.Find the LCM of 3 and 7.
  24. 24.Find the HCF of 63 and 56.
  25. 25.A car goes 154 km on 11 litres of petrol. How far can it go on 38 litres (in km)?
  26. 26.The ratio of boys to girls in a class is 5 : 2. There are 40 boys. How many girls are there?
  27. 27.Round 11.33 to one decimal place. =
  28. 28.A car goes 50 km on 5 litres of petrol. How far can it go on 7 litres (in km)?
  29. 29.What is the smallest number you must take away from 184 so that it divides exactly by 9?
  30. 30.1/9 × 4/5 =
  31. 31.9.7 × 3 =
  32. 32.If 7 kg of rice costs ₹483, how many kg can you buy for ₹138?
  33. 33.Which of these numbers divides exactly by 8? (a) 4831 (b) 7444 (c) 1135 (d) 4296
  34. 34.Two tanks hold 150 litres and 100 litres of milk. What is the biggest can (in litres) that can empty both tanks exactly, with no milk left over?
  35. 35.12 − 36 ÷ 9 × 2 =
  36. 36.32 − 20 ÷ 5 × 4 =
  37. 37.Two tanks hold 315 litres and 90 litres of milk. What is the biggest can (in litres) that can empty both tanks exactly, with no milk left over?
  38. 38.Find the LCM of 18 and 21.
  39. 39.A hall floor is 150 cm long and 125 cm wide. It is covered with the largest square tiles that fit exactly. How many tiles are needed?
  40. 40.36 ÷ 6 × 2 + 3 =

Answer key

  1. 6
  2. 40
  3. 24300
  4. 72
  5. 27
  6. 2
  7. 3
  8. 80
  9. 64
  10. 84
  11. 27
  12. 9.23
  13. 60
  14. 99
  15. 350
  16. 4.7
  17. 3
  18. 270
  19. 48000
  20. 115
  21. 24
  22. 2
  23. 21
  24. 7
  25. 532
  26. 16
  27. 11.3
  28. 70
  29. 4
  30. 4/45
  31. 29.1
  32. 2
  33. 4296
  34. 50
  35. 4
  36. 16
  37. 45
  38. 126
  39. 30
  40. 15

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