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Number Skills Practice Worksheet

Quantitative aptitude lesson 10: Practice: number skills · Set 840 · 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 hall floor is 125 cm long and 100 cm wide. It is covered with the largest square tiles that fit exactly. How many tiles are needed?
  2. 2.Which is closest to 3609 ÷ 39? (a) 45 (b) 900 (c) 90 (d) 180
  3. 3.Find the third proportional to 2 and 6 (that is, 2 : 6 = 6 : ?).
  4. 4.33 − 15 ÷ 3 × 3 =
  5. 5.What is the smallest number you must take away from 370 so that it divides exactly by 12?
  6. 6.8/12 − 4/10 =
  7. 7.51 − 28 ÷ 4 × 3 =
  8. 8.A hall floor is 125 cm long and 75 cm wide. It is covered with the largest square tiles that fit exactly. How many tiles are needed?
  9. 9.Which is closest to 395 + 199 + 203? (a) 800 (b) 700 (c) 1000 (d) 900
  10. 10.Divide ₹189 between Farhan and Tara in the ratio 8 : 1. How much does Farhan get (in ₹)?
  11. 11.4 : 9 = 28 : ?
  12. 12.A hall floor is 140 cm long and 60 cm wide. It is covered with the largest square tiles that fit exactly. How many tiles are needed?
  13. 13.Find the LCM of 42 and 36.
  14. 14.Find the LCM of 32 and 20.
  15. 15.Find the smallest number bigger than 15 that leaves a remainder of 7 when divided by 9, 15 or 10.
  16. 16.If 12 kites cost ₹360, how much do 14 kites cost (in ₹)?
  17. 17.If 6 pens cost ₹30, how much do 4 pens cost (in ₹)?
  18. 18.Find the HCF of 64 and 56.
  19. 19.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?
  20. 20.Find the HCF of 126 and 98.
  21. 21.120% of a number is 246. What is the number?
  22. 22.If 2 kg of rice costs ₹80, how many kg can you buy for ₹360?
  23. 23.What is 1/3 of 66 students?
  24. 24.75% of a number is 156. What is the number?
  25. 25.How many factors does 40 have?
  26. 26.Two tanks hold 30 litres and 135 litres of milk. What is the biggest can (in litres) that can empty both tanks exactly, with no milk left over?
  27. 27.The HCF of two numbers is 9 and their LCM is 216. One of the numbers is 72. What is the other number?
  28. 28.A car goes 57 km on 3 litres of petrol. How far can it go on 11 litres (in km)?
  29. 29.Round 55.36 to one decimal place. =
  30. 30.2/8 + 1/4 =
  31. 31.3 painters can paint a school in 18 days. How many days would 18 painters take, working at the same speed?
  32. 32.Which is closest to 802 × 61? (Round each number first.) (a) 480000 (b) 48000 (c) 96000 (d) 4800
  33. 33.Which is closest to 304 + 204 + 900? (a) 1600 (b) 1400 (c) 1300 (d) 1500
  34. 34.Which is closest to 2002 ÷ 51? (a) 400 (b) 20 (c) 80 (d) 40
  35. 35.Ishaan takes 90 seconds and Rahul takes 75 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?
  36. 36.Which of these numbers divides exactly by 3? (a) 4688 (b) 5031 (c) 1003 (d) 5914
  37. 37.Round 66.47 to one decimal place. =
  38. 38.Find the third proportional to 4 and 20 (that is, 4 : 20 = 20 : ?).
  39. 39.Two tanks hold 45 litres and 10 litres of milk. What is the biggest can (in litres) that can empty both tanks exactly, with no milk left over?
  40. 40.Which is closest to 296 × 28? (Round each number first.) (a) 90000 (b) 900 (c) 9000 (d) 18000

Answer key

  1. 20
  2. 90
  3. 18
  4. 18
  5. 10
  6. 4/15
  7. 30
  8. 15
  9. 800
  10. 168
  11. 63
  12. 21
  13. 252
  14. 160
  15. 97
  16. 420
  17. 20
  18. 8
  19. 45
  20. 14
  21. 205
  22. 9
  23. 22
  24. 208
  25. 8
  26. 15
  27. 27
  28. 209
  29. 55.4
  30. 1/2
  31. 3
  32. 48000
  33. 1400
  34. 40
  35. 450
  36. 5031
  37. 66.5
  38. 100
  39. 5
  40. 9000

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