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Number Skills Practice Worksheet

Quantitative aptitude lesson 10: Practice: number skills · Set 492 · 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.Find the LCM of 9, 5 and 4.
  2. 2.52 − 18 ÷ 9 × 6 =
  3. 3.Which of these numbers divides exactly by 4? (a) 1281 (b) 2137 (c) 4274 (d) 1408
  4. 4.If 11 erasers cost ₹242, how much do 18 erasers cost (in ₹)?
  5. 5.Two tanks hold 35 litres and 20 litres of milk. What is the biggest can (in litres) that can empty both tanks exactly, with no milk left over?
  6. 6.How many factors does 83 have?
  7. 7.How many factors does 78 have?
  8. 8.11 painters can paint a school in 21 days. How many days would 21 painters take, working at the same speed?
  9. 9.Find the LCM of 18 and 16.
  10. 10.Find the smallest number bigger than 15 that leaves a remainder of 1 when divided by 4, 15 or 10.
  11. 11.Find the HCF of 44 and 55.
  12. 12.2 × (30 − 21) + 10 ÷ 5 =
  13. 13.Round 99.76 to one decimal place. =
  14. 14.Which is closest to 1491 ÷ 31? (a) 100 (b) 25 (c) 50 (d) 500
  15. 15.40% of a number is 72. What is the number?
  16. 16.Which is closest to 599 × 88? (Round each number first.) (a) 5400 (b) 108000 (c) 540000 (d) 54000
  17. 17.Divide ₹170 between Isha and Ishaan in the ratio 3 : 7. How much does Isha get (in ₹)?
  18. 18.74 − 32 ÷ 4 × 8 =
  19. 19.Find the HCF of 15 and 40.
  20. 20.Find the HCF of 26 and 117.
  21. 21.4/5 − 2/6 =
  22. 22.Vivaan takes 54 seconds and Kabir 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?
  23. 23.10 painters can paint a school in 30 days. How many days would 6 painters take, working at the same speed?
  24. 24.What is 2/3 of 90 litres?
  25. 25.Round 87.57 to one decimal place. =
  26. 26.What is 1/2 of 30 students?
  27. 27.2 : 7 = 4 : ?
  28. 28.If 11 cricket balls cost ₹198, how much do 3 cricket balls cost (in ₹)?
  29. 29.9 painters can paint a school in 16 days. How many days would 4 painters take, working at the same speed?
  30. 30.If 7 kg of rice costs ₹623, how many kg can you buy for ₹1068?
  31. 31.The HCF of two numbers is 6 and their LCM is 336. One of the numbers is 48. What is the other number?
  32. 32.Three temple bells ring every 30, 20 and 8 minutes. They ring together at 9:00 am. After how many minutes will they next ring together?
  33. 33.Find the smallest number bigger than 9 that leaves a remainder of 5 when divided by 8, 6 or 9.
  34. 34.If 2 pens cost ₹10, how much do 15 pens cost (in ₹)?
  35. 35.Round 76.74 to one decimal place. =
  36. 36.Three temple bells ring every 12, 9 and 18 minutes. They ring together at 9:00 am. After how many minutes will they next ring together?
  37. 37.The ratio of boys to girls in a class is 1 : 2. There are 7 boys. How many girls are there?
  38. 38.How many factors does 42 have?
  39. 39.Sneha takes 75 seconds and Manav takes 60 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?
  40. 40.Find the smallest number bigger than 5 that leaves a remainder of 1 when divided by 4, 5 or 3.

Answer key

  1. 180
  2. 40
  3. 1408
  4. 396
  5. 5
  6. 2
  7. 8
  8. 11
  9. 144
  10. 61
  11. 11
  12. 20
  13. 99.8
  14. 50
  15. 180
  16. 54000
  17. 51
  18. 10
  19. 5
  20. 13
  21. 7/15
  22. 270
  23. 50
  24. 60
  25. 87.6
  26. 15
  27. 14
  28. 54
  29. 36
  30. 12
  31. 42
  32. 120
  33. 77
  34. 75
  35. 76.7
  36. 36
  37. 14
  38. 8
  39. 300
  40. 61

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