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Number Skills Practice Worksheet

Quantitative aptitude lesson 10: Practice: number skills · Set 151 · 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 7. What is the number?
  2. 2.What is the smallest number you must take away from 838 so that it divides exactly by 13?
  3. 3.Find the LCM of 9 and 6.
  4. 4.The ratio of boys to girls in a class is 2 : 5. There are 8 boys. How many girls are there?
  5. 5.Which is closest to 199 × 92? (Round each number first.) (a) 36000 (b) 18000 (c) 180000 (d) 1800
  6. 6.Write 1/5 as a percent.
  7. 7.Divide ₹369 between Pooja and Zoya in the ratio 7 : 2. How much does Pooja get (in ₹)?
  8. 8.Which is closest to 296 × 62? (Round each number first.) (a) 18000 (b) 1800 (c) 36000 (d) 180000
  9. 9.Write 1/10 as a percent.
  10. 10.Which of these numbers divides exactly by 8? (a) 7499 (b) 8856 (c) 1709 (d) 4807
  11. 11.How many factors does 58 have?
  12. 12.The HCF of two numbers is 4 and their LCM is 144. One of the numbers is 16. What is the other number?
  13. 13.4/10 − 2/9 =
  14. 14.7 : 13 = 35 : ?
  15. 15.60 ÷ 5 × 6 + 18 =
  16. 16.How many factors does 27 have?
  17. 17.Round 97056 to the nearest thousand.
  18. 18.Two tanks hold 210 litres and 240 litres of milk. What is the biggest can (in litres) that can empty both tanks exactly, with no milk left over?
  19. 19.What is 7/8 of 152 students?
  20. 20.7 × (22 − 20) + 12 ÷ 4 =
  21. 21.3/5 − 5/9 =
  22. 22.36.4 ÷ 4 =
  23. 23.If 4 pens cost ₹64, how much do 19 pens cost (in ₹)?
  24. 24.If 3 kg of rice costs ₹222, how many kg can you buy for ₹740?
  25. 25.How many factors does 33 have?
  26. 26.Find the smallest number bigger than 15 that leaves a remainder of 3 when divided by 15, 4 or 5.
  27. 27.Round 77944 to the nearest ten.
  28. 28.Which is closest to 604 ÷ 29? (a) 20 (b) 10 (c) 200 (d) 40
  29. 29.Which is closest to 399 × 29? (Round each number first.) (a) 120000 (b) 24000 (c) 12000 (d) 1200
  30. 30.Two tanks hold 120 litres and 150 litres of milk. What is the biggest can (in litres) that can empty both tanks exactly, with no milk left over?
  31. 31.How many factors does 37 have?
  32. 32.What is the smallest number you must add to 185 so that it divides exactly by 8?
  33. 33.Rohan takes 30 seconds and Vivaan takes 45 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?
  34. 34.What is the smallest number you must add to 733 so that it divides exactly by 3?
  35. 35.Three temple bells ring every 6, 5 and 24 minutes. They ring together at 9:00 am. After how many minutes will they next ring together?
  36. 36.What is 2/3 of 27 km?
  37. 37.A hostel has enough food for 8 students for 26 days. How many days will the same food last for 16 students?
  38. 38.A hall floor is 270 cm long and 225 cm wide. It is covered with the largest square tiles that fit exactly. How many tiles are needed?
  39. 39.What is 1/2 of 26 kg?
  40. 40.Rahul takes 50 seconds and Diya takes 90 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?

Answer key

  1. 35
  2. 6
  3. 18
  4. 20
  5. 18000
  6. 20
  7. 287
  8. 18000
  9. 10
  10. 8856
  11. 4
  12. 36
  13. 8/45
  14. 65
  15. 90
  16. 4
  17. 97000
  18. 30
  19. 133
  20. 17
  21. 2/45
  22. 9.1
  23. 304
  24. 10
  25. 4
  26. 63
  27. 77940
  28. 20
  29. 12000
  30. 30
  31. 2
  32. 7
  33. 90
  34. 2
  35. 120
  36. 18
  37. 13
  38. 30
  39. 13
  40. 450

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