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Number Skills Practice Worksheet

Quantitative aptitude lesson 10: Practice: number skills · Set 451 · 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. 1.1/2 − 3/7 =
  2. 2.Divide ₹63 between Arjun and Ananya in the ratio 1 : 2. How much does Ananya get (in ₹)?
  3. 3.If 3 kg of rice costs ₹78, how many kg can you buy for ₹312?
  4. 4.Which is closest to 606 ÷ 29? (a) 20 (b) 200 (c) 10 (d) 40
  5. 5.Which is closest to 802 × 31? (Round each number first.) (a) 2400 (b) 24000 (c) 48000 (d) 240000
  6. 6.If 3 kg of rice costs ₹165, how many kg can you buy for ₹330?
  7. 7.Which is closest to 302 × 18? (Round each number first.) (a) 6000 (b) 600 (c) 60000 (d) 12000
  8. 8.Round 75142 to the nearest thousand.
  9. 9.If 8 mangoes cost ₹56, how much do 11 mangoes cost (in ₹)?
  10. 10.What is the smallest number you must take away from 330 so that it divides exactly by 4?
  11. 11.62 − 12 ÷ 3 × 8 =
  12. 12.What is the smallest number you must take away from 788 so that it divides exactly by 3?
  13. 13.What is the smallest number you must take away from 654 so that it divides exactly by 13?
  14. 14.How many factors does 87 have?
  15. 15.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?
  16. 16.Find the LCM of 5 and 4.
  17. 17.What is the smallest number you must add to 884 so that it divides exactly by 8?
  18. 18.What percent of 250 is 55?
  19. 19.A car goes 240 km on 12 litres of petrol. How far can it go on 4 litres (in km)?
  20. 20.Tara scored 13 marks out of 20 in a test. What percentage did Tara score?
  21. 21.Which of these numbers divides exactly by 9? (a) 8372 (b) 4766 (c) 1981 (d) 3510
  22. 22.What is the smallest number you must take away from 195 so that it divides exactly by 8?
  23. 23.Round 16.68 to one decimal place. =
  24. 24.Which is closest to 696 × 19? (Round each number first.) (a) 28000 (b) 14000 (c) 140000 (d) 1400
  25. 25.10% of a number is 50. What is the number?
  26. 26.What is the smallest number you must add to 303 so that it divides exactly by 4?
  27. 27.Find the LCM of 30 and 24.
  28. 28.What is 2/3 of 27 km?
  29. 29.10 : 15 = 50 : ?
  30. 30.Round 28.13 to one decimal place. =
  31. 31.A hall floor is 350 cm long and 250 cm wide. It is covered with the largest square tiles that fit exactly. How many tiles are needed?
  32. 32.Two tanks hold 100 litres and 140 litres of milk. What is the biggest can (in litres) that can empty both tanks exactly, with no milk left over?
  33. 33.40% of a number is 24. What is the number?
  34. 34.What is the smallest number you must add to 423 so that it divides exactly by 6?
  35. 35.Find the smallest number bigger than 12 that leaves a remainder of 1 when divided by 3, 10 or 12.
  36. 36.(8 + 6) × 9 − 12 =
  37. 37.6 × (25 − 1) + 56 ÷ 7 =
  38. 38.The HCF of two numbers is 5 and their LCM is 175. One of the numbers is 25. What is the other number?
  39. 39.Round 8079 to the nearest hundred.
  40. 40.47 − 6 ÷ 3 × 5 =

Answer key

  1. 1/14
  2. 42
  3. 12
  4. 20
  5. 24000
  6. 6
  7. 6000
  8. 75000
  9. 77
  10. 2
  11. 30
  12. 2
  13. 4
  14. 4
  15. 45
  16. 20
  17. 4
  18. 22
  19. 80
  20. 65
  21. 3510
  22. 3
  23. 16.7
  24. 14000
  25. 500
  26. 1
  27. 120
  28. 18
  29. 75
  30. 28.1
  31. 35
  32. 20
  33. 60
  34. 3
  35. 61
  36. 114
  37. 152
  38. 35
  39. 8100
  40. 37

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