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Number Skills Practice Worksheet

Quantitative aptitude lesson 10: Practice: number skills · Set 469 · 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.What is the smallest number you must take away from 220 so that it divides exactly by 3?
  2. 2.Find the third proportional to 5 and 10 (that is, 5 : 10 = 10 : ?).
  3. 3.What is the smallest number you must add to 751 so that it divides exactly by 8?
  4. 4.If 5 pencil boxes cost ₹105, how much do 20 pencil boxes cost (in ₹)?
  5. 5.Which is closest to 2403 ÷ 29? (a) 80 (b) 160 (c) 800 (d) 40
  6. 6.Find the HCF of 104 and 91.
  7. 7.2 × (30 − 17) + 12 ÷ 6 =
  8. 8.Round 86894 to the nearest thousand.
  9. 9.Three temple bells ring every 15, 5 and 12 minutes. They ring together at 9:00 am. After how many minutes will they next ring together?
  10. 10.Find the LCM of 25 and 35.
  11. 11.What is the smallest number you must add to 142 so that it divides exactly by 4?
  12. 12.The HCF of two numbers is 3 and their LCM is 54. One of the numbers is 6. What is the other number?
  13. 13.Find the smallest number bigger than 15 that leaves a remainder of 1 when divided by 12, 15 or 4.
  14. 14.2/3 of 9 + 5 × 3 =
  15. 15.120% of a number is 120. What is the number?
  16. 16.1/6 of 48 + 6 × 8 =
  17. 17.What is the smallest number you must take away from 942 so that it divides exactly by 11?
  18. 18.If 5 kg of rice costs ₹250, how many kg can you buy for ₹100?
  19. 19.Round 49630 to the nearest hundred.
  20. 20.Find the HCF of 36 and 96.
  21. 21.Two tanks hold 40 litres and 90 litres of milk. What is the biggest can (in litres) that can empty both tanks exactly, with no milk left over?
  22. 22.4 : 6 = 32 : ?
  23. 23.18 + 9 × 10 − 5 =
  24. 24.6 × (18 − 3) + 10 ÷ 2 =
  25. 25.What is the smallest number you must take away from 649 so that it divides exactly by 4?
  26. 26.4 : 2 = 8 : ?
  27. 27.Write 3/4 as a percent.
  28. 28.Which is closest to 407 ÷ 21? (a) 200 (b) 20 (c) 40 (d) 10
  29. 29.63 ÷ 9 × 3 + 24 =
  30. 30.(7 + 19) × 5 − 17 =
  31. 31.Find the smallest number bigger than 12 that leaves a remainder of 2 when divided by 12, 6 or 4.
  32. 32.Three temple bells ring every 30, 24 and 10 minutes. They ring together at 9:00 am. After how many minutes will they next ring together?
  33. 33.A car goes 110 km on 11 litres of petrol. How far can it go on 31 litres (in km)?
  34. 34.If 12 notebooks cost ₹336, how much do 5 notebooks cost (in ₹)?
  35. 35.A hall floor is 175 cm long and 50 cm wide. It is covered with the largest square tiles that fit exactly. How many tiles are needed?
  36. 36.9 : 11 = 36 : ?
  37. 37.Find the HCF of 14 and 16.
  38. 38.Round 95537 to the nearest hundred.
  39. 39.What percent of 400 is 256?
  40. 40.Three temple bells ring every 15, 30 and 12 minutes. They ring together at 9:00 am. After how many minutes will they next ring together?

Answer key

  1. 1
  2. 20
  3. 1
  4. 420
  5. 80
  6. 13
  7. 28
  8. 87000
  9. 60
  10. 175
  11. 2
  12. 27
  13. 61
  14. 21
  15. 100
  16. 56
  17. 7
  18. 2
  19. 49600
  20. 12
  21. 10
  22. 48
  23. 103
  24. 95
  25. 1
  26. 4
  27. 75
  28. 20
  29. 45
  30. 113
  31. 14
  32. 120
  33. 310
  34. 140
  35. 14
  36. 44
  37. 2
  38. 95500
  39. 64
  40. 60

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