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Number Skills Practice Worksheet

Quantitative aptitude lesson 10: Practice: number skills · Set 214 · 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.Diya scored 12 marks out of 25 in a test. What percentage did Diya score?
  2. 2.How many factors does 77 have?
  3. 3.7/8 + 6/7 =
  4. 4.If 6 pens cost ₹210, how much do 12 pens cost (in ₹)?
  5. 5.37 − 8 ÷ 2 × 3 =
  6. 6.The HCF of two numbers is 4 and their LCM is 24. One of the numbers is 12. What is the other number?
  7. 7.Which is closest to 598 × 31? (Round each number first.) (a) 1800 (b) 18000 (c) 180000 (d) 36000
  8. 8.Three temple bells ring every 12, 6 and 5 minutes. They ring together at 9:00 am. After how many minutes will they next ring together?
  9. 9.What is 50% of 516?
  10. 10.Two tanks hold 35 litres and 30 litres of milk. What is the biggest can (in litres) that can empty both tanks exactly, with no milk left over?
  11. 11.Which of these numbers divides exactly by 9? (a) 1343 (b) 6606 (c) 7265 (d) 3552
  12. 12.Two tanks hold 50 litres and 30 litres of milk. What is the biggest can (in litres) that can empty both tanks exactly, with no milk left over?
  13. 13.Find the LCM of 15 and 9.
  14. 14.Find the LCM of 12 and 10.
  15. 15.2/3 + 2/4 =
  16. 16.Find the LCM of 2, 5 and 3.
  17. 17.Divide ₹392 between Ishaan and Vivaan in the ratio 1 : 7. How much does Ishaan get (in ₹)?
  18. 18.10 ÷ 5 × 2 + 1 =
  19. 19.A car goes 84 km on 7 litres of petrol. How far can it go on 39 litres (in km)?
  20. 20.Write 1/4 as a percent.
  21. 21.Find the smallest number bigger than 15 that leaves a remainder of 2 when divided by 6, 15 or 12.
  22. 22.Round 71997 to the nearest thousand.
  23. 23.Rohan takes 40 seconds and Aarav takes 50 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?
  24. 24.What is 7/8 of 16 students?
  25. 25.Rahul takes 30 seconds and Karan takes 40 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?
  26. 26.Arjun takes 40 seconds and Aditya 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?
  27. 27.What is the smallest number you must take away from 162 so that it divides exactly by 4?
  28. 28.Which is closest to 297 × 18? (Round each number first.) (a) 600 (b) 12000 (c) 6000 (d) 60000
  29. 29.40 + 5 × 6 − 26 =
  30. 30.38 + 2 × 2 − 16 =
  31. 31.Find the LCM of 7 and 4.
  32. 32.If 5 kg of rice costs ₹255, how many kg can you buy for ₹306?
  33. 33.Round 25.69 to one decimal place. =
  34. 34.Round 69.31 to one decimal place. =
  35. 35.Two tanks hold 15 litres and 20 litres of milk. What is the biggest can (in litres) that can empty both tanks exactly, with no milk left over?
  36. 36.3/4 + 2/3 =
  37. 37.40 + 3 × 7 − 27 =
  38. 38.Which is closest to 299 + 704 + 398? (a) 1500 (b) 1400 (c) 1600 (d) 1300
  39. 39.What is 1/3 of ₹21?
  40. 40.3/9 + 2/4 =

Answer key

  1. 48
  2. 4
  3. 97/56
  4. 420
  5. 25
  6. 8
  7. 18000
  8. 60
  9. 258
  10. 5
  11. 6606
  12. 10
  13. 45
  14. 60
  15. 7/6
  16. 30
  17. 49
  18. 5
  19. 468
  20. 25
  21. 62
  22. 72000
  23. 200
  24. 14
  25. 120
  26. 360
  27. 2
  28. 6000
  29. 44
  30. 26
  31. 28
  32. 6
  33. 25.7
  34. 69.3
  35. 5
  36. 17/12
  37. 34
  38. 1400
  39. 7
  40. 5/6

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