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Number Skills Practice Worksheet

Quantitative aptitude lesson 10: Practice: number skills · Set 778 · 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.If 9 kg of rice costs ₹360, how many kg can you buy for ₹400?
  2. 2.Find the LCM of 6 and 4.
  3. 3.5 : 7 = 35 : ?
  4. 4.What is the smallest number you must add to 265 so that it divides exactly by 7?
  5. 5.Two tanks hold 405 litres and 180 litres of milk. What is the biggest can (in litres) that can empty both tanks exactly, with no milk left over?
  6. 6.Find the third proportional to 2 and 4 (that is, 2 : 4 = 4 : ?).
  7. 7.Write 14/25 as a percent.
  8. 8.What is the smallest number you must add to 865 so that it divides exactly by 4?
  9. 9.9/11 + 2/3 =
  10. 10.Find the smallest number bigger than 12 that leaves a remainder of 2 when divided by 4, 8 or 12.
  11. 11.A car goes 180 km on 10 litres of petrol. How far can it go on 32 litres (in km)?
  12. 12.A hall floor is 200 cm long and 80 cm wide. It is covered with the largest square tiles that fit exactly. How many tiles are needed?
  13. 13.Which is closest to 395 + 196 + 904? (a) 1500 (b) 1700 (c) 1600 (d) 1400
  14. 14.A hall floor is 210 cm long and 60 cm wide. It is covered with the largest square tiles that fit exactly. How many tiles are needed?
  15. 15.What percent of 400 is 284?
  16. 16.Which of these numbers divides exactly by 4? (a) 2503 (b) 3978 (c) 3544 (d) 5630
  17. 17.Find the third proportional to 4 and 20 (that is, 4 : 20 = 20 : ?).
  18. 18.What is 50% of 102?
  19. 19.Which of these numbers divides exactly by 8? (a) 7210 (b) 1725 (c) 9824 (d) 5283
  20. 20.Which is closest to 404 × 48? (Round each number first.) (a) 20000 (b) 40000 (c) 200000 (d) 2000
  21. 21.The ratio of boys to girls in a class is 3 : 5. There are 6 boys. How many girls are there?
  22. 22.5 × (19 − 18) + 40 ÷ 8 =
  23. 23.The ratio of boys to girls in a class is 9 : 4. There are 90 boys. How many girls are there?
  24. 24.If 9 kites cost ₹36, how much do 17 kites cost (in ₹)?
  25. 25.18 ÷ 2 × 5 + 3 =
  26. 26.Round 88269 to the nearest hundred.
  27. 27.11 : 4 = 66 : ?
  28. 28.Round 15.62 to one decimal place. =
  29. 29.What is 1/2 of 16 kg?
  30. 30.Find the smallest number bigger than 12 that leaves a remainder of 4 when divided by 12, 10 or 9.
  31. 31.12% of a number is 39. What is the number?
  32. 32.The HCF of two numbers is 7 and their LCM is 168. One of the numbers is 21. What is the other number?
  33. 33.The ratio of boys to girls in a class is 7 : 3. There are 14 boys. How many girls are there?
  34. 34.How many factors does 42 have?
  35. 35.Find the smallest number bigger than 12 that leaves a remainder of 7 when divided by 8, 9 or 12.
  36. 36.Find the LCM of 6 and 9.
  37. 37.9/12 × 1/2 =
  38. 38.Find the third proportional to 6 and 18 (that is, 6 : 18 = 18 : ?).
  39. 39.Three temple bells ring every 12, 24 and 10 minutes. They ring together at 9:00 am. After how many minutes will they next ring together?
  40. 40.1/5 of 30 + 3 × 9 =

Answer key

  1. 10
  2. 12
  3. 49
  4. 1
  5. 45
  6. 8
  7. 56
  8. 3
  9. 49/33
  10. 26
  11. 576
  12. 10
  13. 1500
  14. 14
  15. 71
  16. 3544
  17. 100
  18. 51
  19. 9824
  20. 20000
  21. 10
  22. 10
  23. 40
  24. 68
  25. 48
  26. 88300
  27. 24
  28. 15.6
  29. 8
  30. 184
  31. 325
  32. 56
  33. 6
  34. 8
  35. 79
  36. 18
  37. 3/8
  38. 54
  39. 120
  40. 33

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