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Number Skills Practice Worksheet

Quantitative aptitude lesson 10: Practice: number skills · Set 254 · 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 8 notebooks cost ₹416, how much do 11 notebooks cost (in ₹)?
  2. 2.3 : 9 = 24 : ?
  3. 3.The ratio of boys to girls in a class is 7 : 4. There are 21 boys. How many girls are there?
  4. 4.What is the smallest number you must take away from 842 so that it divides exactly by 6?
  5. 5.Find the third proportional to 4 and 12 (that is, 4 : 12 = 12 : ?).
  6. 6.What is the smallest number you must take away from 339 so that it divides exactly by 6?
  7. 7.What is 15% of 80?
  8. 8.What is 120% of 430?
  9. 9.(3 + 18) × 3 − 26 =
  10. 10.Find the HCF of 10 and 15.
  11. 11.Find the smallest number bigger than 15 that leaves a remainder of 1 when divided by 15, 10 or 8.
  12. 12.A car goes 112 km on 7 litres of petrol. How far can it go on 15 litres (in km)?
  13. 13.Find the third proportional to 8 and 40 (that is, 8 : 40 = 40 : ?).
  14. 14.How many factors does 67 have?
  15. 15.60% of a number is 180. What is the number?
  16. 16.2/9 of 54 + 6 × 4 =
  17. 17.Which is closest to 305 + 303 + 503? (a) 1000 (b) 1200 (c) 1100 (d) 1300
  18. 18.Two tanks hold 60 litres and 80 litres of milk. What is the biggest can (in litres) that can empty both tanks exactly, with no milk left over?
  19. 19.9.38 + 2.5 =
  20. 20.Round 68504 to the nearest hundred.
  21. 21.3 painters can paint a school in 24 days. How many days would 4 painters take, working at the same speed?
  22. 22.Find the smallest number bigger than 9 that leaves a remainder of 1 when divided by 4, 9 or 6.
  23. 23.What is the smallest number you must add to 250 so that it divides exactly by 12?
  24. 24.A hall floor is 150 cm long and 90 cm wide. It is covered with the largest square tiles that fit exactly. How many tiles are needed?
  25. 25.50% of a number is 166. What is the number?
  26. 26.How many factors does 98 have?
  27. 27.The HCF of two numbers is 2 and their LCM is 70. One of the numbers is 14. What is the other number?
  28. 28.A hostel has enough food for 10 students for 4 days. How many days will the same food last for 2 students?
  29. 29.Which of these numbers divides exactly by 8? (a) 5046 (b) 7973 (c) 8312 (d) 7406
  30. 30.If 4 notebooks cost ₹28, how much do 5 notebooks cost (in ₹)?
  31. 31.46 − 32 ÷ 4 × 5 =
  32. 32.Find the LCM of 2, 3 and 12.
  33. 33.The HCF of two numbers is 6 and their LCM is 90. One of the numbers is 18. What is the other number?
  34. 34.What is the smallest number you must add to 501 so that it divides exactly by 4?
  35. 35.What is the smallest number you must add to 799 so that it divides exactly by 7?
  36. 36.The HCF of two numbers is 8 and their LCM is 112. One of the numbers is 56. What is the other number?
  37. 37.Which is closest to 898 + 200 + 97? (a) 1300 (b) 1400 (c) 1100 (d) 1200
  38. 38.Find the third proportional to 6 and 30 (that is, 6 : 30 = 30 : ?).
  39. 39.A hall floor is 420 cm long and 120 cm wide. It is covered with the largest square tiles that fit exactly. How many tiles are needed?
  40. 40.1.2 × 3 =

Answer key

  1. 572
  2. 72
  3. 12
  4. 2
  5. 36
  6. 3
  7. 12
  8. 516
  9. 37
  10. 5
  11. 121
  12. 240
  13. 200
  14. 2
  15. 300
  16. 36
  17. 1100
  18. 20
  19. 11.88
  20. 68500
  21. 18
  22. 37
  23. 2
  24. 15
  25. 332
  26. 6
  27. 10
  28. 20
  29. 8312
  30. 35
  31. 6
  32. 12
  33. 30
  34. 3
  35. 6
  36. 16
  37. 1200
  38. 150
  39. 14
  40. 3.6

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