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Number Skills Practice Worksheet

Quantitative aptitude lesson 10: Practice: number skills · Set 191 · 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 150% of 518?
  2. 2.The HCF of two numbers is 5 and their LCM is 50. One of the numbers is 25. What is the other number?
  3. 3.Zoya takes 36 seconds and Ishaan takes 40 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?
  4. 4.Round 62.94 to one decimal place. =
  5. 5.5 : 6 = 40 : ?
  6. 6.15 ÷ 2 =
  7. 7.Two tanks hold 360 litres and 135 litres of milk. What is the biggest can (in litres) that can empty both tanks exactly, with no milk left over?
  8. 8.Find the HCF of 56 and 64.
  9. 9.A car goes 138 km on 6 litres of petrol. How far can it go on 36 litres (in km)?
  10. 10.(9 + 10) × 8 − 8 =
  11. 11.Find the third proportional to 9 and 27 (that is, 9 : 27 = 27 : ?).
  12. 12.Round 13.58 to one decimal place. =
  13. 13.A car goes 27 km on 3 litres of petrol. How far can it go on 29 litres (in km)?
  14. 14.3.5 × 5 =
  15. 15.A car goes 99 km on 9 litres of petrol. How far can it go on 18 litres (in km)?
  16. 16.If 7 kg of rice costs ₹469, how many kg can you buy for ₹871?
  17. 17.4.5 × 3 =
  18. 18.Which of these numbers divides exactly by 3? (a) 2937 (b) 9310 (c) 5725 (d) 2054
  19. 19.Priya takes 30 seconds and Karan takes 54 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?
  20. 20.What is the smallest number you must take away from 990 so that it divides exactly by 4?
  21. 21.4/7 × 2/5 =
  22. 22.Find the third proportional to 9 and 18 (that is, 9 : 18 = 18 : ?).
  23. 23.Find the LCM of 35 and 40.
  24. 24.Find the LCM of 32 and 20.
  25. 25.If 9 kg of rice costs ₹414, how many kg can you buy for ₹92?
  26. 26.Nisha scored 20 marks out of 25 in a test. What percentage did Nisha score?
  27. 27.1.1 × 2 =
  28. 28.6.9 × 4 =
  29. 29.What percent of 500 is 95?
  30. 30.The ratio of boys to girls in a class is 9 : 2. There are 27 boys. How many girls are there?
  31. 31.4 ÷ 2 × 6 + 7 =
  32. 32.75% of a number is 120. What is the number?
  33. 33.What is the smallest number you must add to 189 so that it divides exactly by 12?
  34. 34.Find the LCM of 12 and 8.
  35. 35.A car goes 204 km on 12 litres of petrol. How far can it go on 29 litres (in km)?
  36. 36.What is the smallest number you must add to 937 so that it divides exactly by 3?
  37. 37.(12 + 2) × 7 − 6 =
  38. 38.What is 1/2 of 36 km?
  39. 39.Which is closest to 1193 ÷ 19? (a) 600 (b) 120 (c) 30 (d) 60
  40. 40.A hall floor is 200 cm long and 120 cm wide. It is covered with the largest square tiles that fit exactly. How many tiles are needed?

Answer key

  1. 777
  2. 10
  3. 360
  4. 62.9
  5. 48
  6. 7.5
  7. 45
  8. 8
  9. 828
  10. 144
  11. 81
  12. 13.6
  13. 261
  14. 17.5
  15. 198
  16. 13
  17. 13.5
  18. 2937
  19. 270
  20. 2
  21. 8/35
  22. 36
  23. 280
  24. 160
  25. 2
  26. 80
  27. 2.2
  28. 27.6
  29. 19
  30. 6
  31. 19
  32. 160
  33. 3
  34. 24
  35. 493
  36. 2
  37. 92
  38. 18
  39. 60
  40. 15

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