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Number Skills Practice Worksheet

Quantitative aptitude lesson 10: Practice: number skills · Set 853 · 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.Zoya takes 30 seconds and Farhan takes 48 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?
  2. 2.2 painters can paint a school in 7 days. How many days would 7 painters take, working at the same speed?
  3. 3.What is the smallest number you must take away from 605 so that it divides exactly by 12?
  4. 4.Tara takes 45 seconds and Rohan takes 54 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?
  5. 5.12 : 2 = 96 : ?
  6. 6.Round 51.64 to one decimal place. =
  7. 7.Three temple bells ring every 9, 6 and 8 minutes. They ring together at 9:00 am. After how many minutes will they next ring together?
  8. 8.How many factors does 20 have?
  9. 9.A car goes 140 km on 7 litres of petrol. How far can it go on 9 litres (in km)?
  10. 10.Divide ₹182 between Ananya and Tara in the ratio 9 : 4. How much does Tara get (in ₹)?
  11. 11.Find the HCF of 35 and 20.
  12. 12.If 4 kg of rice costs ₹228, how many kg can you buy for ₹513?
  13. 13.Round 79257 to the nearest hundred.
  14. 14.Find the smallest number bigger than 15 that leaves a remainder of 2 when divided by 15, 6 or 12.
  15. 15.A hostel has enough food for 11 students for 13 days. How many days will the same food last for 13 students?
  16. 16.Write 3/50 as a percent.
  17. 17.What is the smallest number you must add to 361 so that it divides exactly by 6?
  18. 18.Divide ₹132 between Ishaan and Kabir in the ratio 2 : 9. How much does Ishaan get (in ₹)?
  19. 19.If 2 kg of rice costs ₹108, how many kg can you buy for ₹486?
  20. 20.How many factors does 24 have?
  21. 21.Three temple bells ring every 10, 12 and 30 minutes. They ring together at 9:00 am. After how many minutes will they next ring together?
  22. 22.15 + 5 × 10 − 7 =
  23. 23.What is the smallest number you must add to 579 so that it divides exactly by 8?
  24. 24.5/12 × 1/2 =
  25. 25.3/9 + 1/2 =
  26. 26.Find the LCM of 9 and 24.
  27. 27.Which of these numbers divides exactly by 4? (a) 1871 (b) 8534 (c) 5044 (d) 6963
  28. 28.The HCF of two numbers is 2 and their LCM is 126. One of the numbers is 18. What is the other number?
  29. 29.The ratio of boys to girls in a class is 7 : 3. There are 49 boys. How many girls are there?
  30. 30.15 − 12 ÷ 6 × 6 =
  31. 31.7/9 − 2/5 =
  32. 32.Write 3/5 as a percent.
  33. 33.60% of a number is 228. What is the number?
  34. 34.A car goes 48 km on 4 litres of petrol. How far can it go on 2 litres (in km)?
  35. 35.What is 80% of 435?
  36. 36.Which is closest to 498 × 61? (Round each number first.) (a) 30000 (b) 60000 (c) 300000 (d) 3000
  37. 37.The ratio of boys to girls in a class is 1 : 4. There are 3 boys. How many girls are there?
  38. 38.3.02 + 1.6 =
  39. 39.9/12 − 1/2 =
  40. 40.Find the HCF of 24 and 21.

Answer key

  1. 240
  2. 2
  3. 5
  4. 270
  5. 16
  6. 51.6
  7. 72
  8. 6
  9. 180
  10. 56
  11. 5
  12. 9
  13. 79300
  14. 62
  15. 11
  16. 6
  17. 5
  18. 24
  19. 9
  20. 8
  21. 60
  22. 58
  23. 5
  24. 5/24
  25. 5/6
  26. 72
  27. 5044
  28. 14
  29. 21
  30. 3
  31. 17/45
  32. 60
  33. 380
  34. 24
  35. 348
  36. 30000
  37. 12
  38. 4.62
  39. 1/4
  40. 3

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