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Number Skills Practice Worksheet

Quantitative aptitude lesson 10: Practice: number skills · Set 821 · 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. 1.9 : 5 = 18 : ?
  2. 2.Find the smallest number bigger than 15 that leaves a remainder of 1 when divided by 15, 3 or 9.
  3. 3.What percent of 250 is 125?
  4. 4.Divide ₹231 between Meera and Sneha in the ratio 6 : 5. How much does Sneha get (in ₹)?
  5. 5.Find the LCM of 7 and 6.
  6. 6.Nisha takes 45 seconds and Karan takes 80 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?
  7. 7.Divide ₹235 between Priya and Rahul in the ratio 3 : 2. How much does Rahul get (in ₹)?
  8. 8.6 : 8 = 12 : ?
  9. 9.A hall floor is 420 cm long and 240 cm wide. It is covered with the largest square tiles that fit exactly. How many tiles are needed?
  10. 10.Divide ₹520 between Rahul and Arjun in the ratio 9 : 1. How much does Rahul get (in ₹)?
  11. 11.49 − 30 ÷ 5 × 2 =
  12. 12.Which of these numbers divides exactly by 11? (a) 6512 (b) 9246 (c) 1784 (d) 5156
  13. 13.Which of these numbers divides exactly by 4? (a) 7059 (b) 1984 (c) 3145 (d) 5347
  14. 14.Three temple bells ring every 4, 5 and 6 minutes. They ring together at 9:00 am. After how many minutes will they next ring together?
  15. 15.1/2 of 18 + 4 × 6 =
  16. 16.Two tanks hold 360 litres and 280 litres of milk. What is the biggest can (in litres) that can empty both tanks exactly, with no milk left over?
  17. 17.How many factors does 25 have?
  18. 18.The HCF of two numbers is 9 and their LCM is 189. One of the numbers is 63. What is the other number?
  19. 19.Which of these numbers divides exactly by 9? (a) 7706 (b) 1578 (c) 1911 (d) 9828
  20. 20.5/6 − 1/10 =
  21. 21.8 : 5 = 32 : ?
  22. 22.1/2 − 4/9 =
  23. 23.What percent of 20 is 12?
  24. 24.What is 5% of 320?
  25. 25.Find the smallest number bigger than 12 that leaves a remainder of 1 when divided by 9, 12 or 10.
  26. 26.Which is closest to 397 × 38? (Round each number first.) (a) 16000 (b) 160000 (c) 1600 (d) 32000
  27. 27.Which of these numbers divides exactly by 4? (a) 4157 (b) 5193 (c) 2603 (d) 1920
  28. 28.Which of these numbers divides exactly by 3? (a) 4006 (b) 6250 (c) 1546 (d) 9471
  29. 29.Find the third proportional to 8 and 24 (that is, 8 : 24 = 24 : ?).
  30. 30.A hall floor is 80 cm long and 60 cm wide. It is covered with the largest square tiles that fit exactly. How many tiles are needed?
  31. 31.Find the third proportional to 6 and 30 (that is, 6 : 30 = 30 : ?).
  32. 32.22.5 ÷ 9 =
  33. 33.Find the LCM of 10 and 18.
  34. 34.Find the smallest number bigger than 12 that leaves a remainder of 2 when divided by 9, 12 or 10.
  35. 35.What is the smallest number you must take away from 616 so that it divides exactly by 9?
  36. 36.If 4 pens cost ₹96, how much do 3 pens cost (in ₹)?
  37. 37.Round 16.76 to one decimal place. =
  38. 38.What is the smallest number you must add to 124 so that it divides exactly by 6?
  39. 39.What is the smallest number you must take away from 770 so that it divides exactly by 9?
  40. 40.2/4 + 3/8 =

Answer key

  1. 10
  2. 46
  3. 50
  4. 105
  5. 42
  6. 720
  7. 94
  8. 16
  9. 28
  10. 468
  11. 37
  12. 6512
  13. 1984
  14. 60
  15. 33
  16. 40
  17. 3
  18. 27
  19. 9828
  20. 11/15
  21. 20
  22. 1/18
  23. 60
  24. 16
  25. 181
  26. 16000
  27. 1920
  28. 9471
  29. 72
  30. 12
  31. 150
  32. 2.5
  33. 90
  34. 182
  35. 4
  36. 72
  37. 16.8
  38. 2
  39. 5
  40. 7/8

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