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Number Skills Practice Worksheet

Quantitative aptitude lesson 10: Practice: number skills · Set 637 · 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 15, 10 and 4.
  2. 2.7 × (16 − 15) + 14 ÷ 2 =
  3. 3.Diya takes 90 seconds and Isha takes 60 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.How many factors does 18 have?
  5. 5.150% of a number is 369. What is the number?
  6. 6.1/2 + 2/3 =
  7. 7.Dev takes 60 seconds and Pooja 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?
  8. 8.A car goes 55 km on 5 litres of petrol. How far can it go on 9 litres (in km)?
  9. 9.Which is closest to 701 + 795 + 196? (a) 1600 (b) 1800 (c) 1900 (d) 1700
  10. 10.Divide ₹78 between Kabir and Tara in the ratio 6 : 7. How much does Kabir get (in ₹)?
  11. 11.What is the smallest number you must add to 411 so that it divides exactly by 7?
  12. 12.The HCF of two numbers is 4 and their LCM is 224. One of the numbers is 32. What is the other number?
  13. 13.What is the smallest number you must take away from 872 so that it divides exactly by 9?
  14. 14.Find the third proportional to 4 and 12 (that is, 4 : 12 = 12 : ?).
  15. 15.Find the LCM of 3, 10 and 14.
  16. 16.Which is closest to 502 × 18? (Round each number first.) (a) 20000 (b) 1000 (c) 10000 (d) 100000
  17. 17.A hall floor is 160 cm long and 100 cm wide. It is covered with the largest square tiles that fit exactly. How many tiles are needed?
  18. 18.Find the LCM of 20 and 15.
  19. 19.If 7 kg of rice costs ₹217, how many kg can you buy for ₹186?
  20. 20.2/3 − 4/11 =
  21. 21.What is the smallest number you must take away from 597 so that it divides exactly by 11?
  22. 22.Find the third proportional to 5 and 15 (that is, 5 : 15 = 15 : ?).
  23. 23.Find the LCM of 7 and 2.
  24. 24.Find the LCM of 6, 12 and 3.
  25. 25.Round 58.11 to one decimal place. =
  26. 26.What is the smallest number you must add to 980 so that it divides exactly by 13?
  27. 27.What is 3/7 of 189 litres?
  28. 28.5.11 + 8.2 =
  29. 29.Find the smallest number bigger than 15 that leaves a remainder of 2 when divided by 3, 4 or 15.
  30. 30.Which is closest to 702 × 31? (Round each number first.) (a) 210000 (b) 42000 (c) 21000 (d) 2100
  31. 31.Which is closest to 196 × 58? (Round each number first.) (a) 120000 (b) 1200 (c) 24000 (d) 12000
  32. 32.Which is closest to 497 × 50? (Round each number first.) (a) 25000 (b) 2500 (c) 50000 (d) 250000
  33. 33.What percent of 80 is 44?
  34. 34.14 + 12 × 8 − 14 =
  35. 35.Find the LCM of 18 and 48.
  36. 36.Round 93.88 to one decimal place. =
  37. 37.Which is closest to 2792 ÷ 41? (a) 700 (b) 35 (c) 70 (d) 140
  38. 38.150% of a number is 294. What is the number?
  39. 39.What is the smallest number you must take away from 373 so that it divides exactly by 13?
  40. 40.(13 + 10) × 6 − 26 =

Answer key

  1. 60
  2. 14
  3. 180
  4. 6
  5. 246
  6. 7/6
  7. 180
  8. 99
  9. 1700
  10. 36
  11. 2
  12. 28
  13. 8
  14. 36
  15. 210
  16. 10000
  17. 40
  18. 60
  19. 6
  20. 10/33
  21. 3
  22. 45
  23. 14
  24. 12
  25. 58.1
  26. 8
  27. 81
  28. 13.31
  29. 62
  30. 21000
  31. 12000
  32. 25000
  33. 55
  34. 96
  35. 144
  36. 93.9
  37. 70
  38. 196
  39. 9
  40. 112

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