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Number Skills Practice Worksheet

Quantitative aptitude lesson 10: Practice: number skills · Set 34 · 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. 1.20% of a number is 55. What is the number?
  2. 2.Which is closest to 298 × 71? (Round each number first.) (a) 210000 (b) 2100 (c) 42000 (d) 21000
  3. 3.Which of these numbers divides exactly by 6? (a) 8285 (b) 1980 (c) 2494 (d) 1526
  4. 4.Find the smallest number bigger than 10 that leaves a remainder of 4 when divided by 5, 10 or 6.
  5. 5.Find the LCM of 14, 7 and 10.
  6. 6.12% of a number is 18. What is the number?
  7. 7.If 2 cricket balls cost ₹104, how much do 5 cricket balls cost (in ₹)?
  8. 8.The HCF of two numbers is 2 and their LCM is 12. One of the numbers is 4. What is the other number?
  9. 9.9 × (22 − 15) + 6 ÷ 3 =
  10. 10.25 ÷ 5 × 9 + 16 =
  11. 11.A car goes 96 km on 6 litres of petrol. How far can it go on 11 litres (in km)?
  12. 12.7/8 of 56 + 3 × 3 =
  13. 13.The ratio of boys to girls in a class is 8 : 5. There are 32 boys. How many girls are there?
  14. 14.31 − 18 ÷ 6 × 9 =
  15. 15.Find the LCM of 21 and 12.
  16. 16.A car goes 72 km on 3 litres of petrol. How far can it go on 30 litres (in km)?
  17. 17.2 : 6 = 8 : ?
  18. 18.Which of these numbers divides exactly by 11? (a) 6776 (b) 6748 (c) 9314 (d) 8772
  19. 19.24 ÷ 8 × 9 + 21 =
  20. 20.4.67 + 4.8 =
  21. 21.(19 + 18) × 3 − 15 =
  22. 22.15 ÷ 3 × 5 + 6 =
  23. 23.Divide ₹270 between Zoya and Arjun in the ratio 1 : 5. How much does Arjun get (in ₹)?
  24. 24.If 8 notebooks cost ₹40, how much do 17 notebooks cost (in ₹)?
  25. 25.How many factors does 35 have?
  26. 26.Find the HCF of 20 and 28.
  27. 27.Which is closest to 300 × 28? (Round each number first.) (a) 9000 (b) 18000 (c) 90000 (d) 900
  28. 28.Which is closest to 201 × 28? (Round each number first.) (a) 12000 (b) 600 (c) 60000 (d) 6000
  29. 29.1/12 + 1/5 =
  30. 30.35.1 ÷ 9 =
  31. 31.Divide ₹432 between Meera and Diya in the ratio 5 : 7. How much does Meera get (in ₹)?
  32. 32.Round 91.82 to one decimal place. =
  33. 33.Which is closest to 3197 ÷ 39? (a) 40 (b) 160 (c) 800 (d) 80
  34. 34.What percent of 25 is 7?
  35. 35.Find the third proportional to 2 and 4 (that is, 2 : 4 = 4 : ?).
  36. 36.What is the smallest number you must take away from 282 so that it divides exactly by 4?
  37. 37.75% of a number is 129. What is the number?
  38. 38.2/6 + 1/7 =
  39. 39.Three temple bells ring every 9, 15 and 6 minutes. They ring together at 9:00 am. After how many minutes will they next ring together?
  40. 40.Find the LCM of 21 and 24.

Answer key

  1. 275
  2. 21000
  3. 1980
  4. 34
  5. 70
  6. 150
  7. 260
  8. 6
  9. 65
  10. 61
  11. 176
  12. 58
  13. 20
  14. 4
  15. 84
  16. 720
  17. 24
  18. 6776
  19. 48
  20. 9.47
  21. 96
  22. 31
  23. 225
  24. 85
  25. 4
  26. 4
  27. 9000
  28. 6000
  29. 17/60
  30. 3.9
  31. 180
  32. 91.8
  33. 80
  34. 28
  35. 8
  36. 2
  37. 172
  38. 10/21
  39. 90
  40. 168

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