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Number Skills Practice Worksheet

Quantitative aptitude lesson 10: Practice: number skills · Set 951 · 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. 1.7 painters can paint a school in 27 days. How many days would 9 painters take, working at the same speed?
  2. 2.80% of a number is 24. What is the number?
  3. 3.Tara scored 4 marks out of 80 in a test. What percentage did Tara score?
  4. 4.What is the smallest number you must add to 752 so that it divides exactly by 13?
  5. 5.6/8 + 5/10 =
  6. 6.Which is closest to 2706 ÷ 31? (a) 45 (b) 900 (c) 180 (d) 90
  7. 7.9.4 × 3 =
  8. 8.If 8 kg of rice costs ₹576, how many kg can you buy for ₹504?
  9. 9.Round 20532 to the nearest thousand.
  10. 10.The ratio of boys to girls in a class is 8 : 5. There are 64 boys. How many girls are there?
  11. 11.If 7 bottles of juice cost ₹259, how much do 5 bottles of juice cost (in ₹)?
  12. 12.45 − 21 ÷ 3 × 2 =
  13. 13.What is the smallest number you must take away from 497 so that it divides exactly by 6?
  14. 14.How many factors does 32 have?
  15. 15.Which is closest to 900 ÷ 31? (a) 300 (b) 15 (c) 30 (d) 60
  16. 16.If 7 pens cost ₹35, how much do 13 pens cost (in ₹)?
  17. 17.Find the HCF of 36 and 24.
  18. 18.Find the LCM of 30 and 25.
  19. 19.31 − 49 ÷ 7 × 2 =
  20. 20.Find the smallest number bigger than 15 that leaves a remainder of 1 when divided by 12, 3 or 15.
  21. 21.What is the smallest number you must add to 361 so that it divides exactly by 6?
  22. 22.Three temple bells ring every 6, 4 and 8 minutes. They ring together at 9:00 am. After how many minutes will they next ring together?
  23. 23.A hostel has enough food for 4 students for 6 days. How many days will the same food last for 3 students?
  24. 24.How many factors does 94 have?
  25. 25.A hostel has enough food for 2 students for 27 days. How many days will the same food last for 18 students?
  26. 26.Two tanks hold 350 litres and 400 litres of milk. What is the biggest can (in litres) that can empty both tanks exactly, with no milk left over?
  27. 27.A hall floor is 210 cm long and 60 cm wide. It is covered with the largest square tiles that fit exactly. How many tiles are needed?
  28. 28.8 : 11 = 72 : ?
  29. 29.Find the HCF of 39 and 91.
  30. 30.5.6 ÷ 4 =
  31. 31.22 ÷ 2 × 8 + 15 =
  32. 32.What is the smallest number you must add to 710 so that it divides exactly by 8?
  33. 33.How many factors does 47 have?
  34. 34.(2 + 20) × 2 − 22 =
  35. 35.Two tanks hold 150 litres and 200 litres of milk. What is the biggest can (in litres) that can empty both tanks exactly, with no milk left over?
  36. 36.What is 4/5 of ₹100?
  37. 37.35 − 18 ÷ 6 × 2 =
  38. 38.1/5 + 1/2 =
  39. 39.Find the smallest number bigger than 8 that leaves a remainder of 1 when divided by 4, 8 or 3.
  40. 40.Rohan scored 20 marks out of 80 in a test. What percentage did Rohan score?

Answer key

  1. 21
  2. 30
  3. 5
  4. 2
  5. 5/4
  6. 90
  7. 28.2
  8. 7
  9. 21000
  10. 40
  11. 185
  12. 31
  13. 5
  14. 6
  15. 30
  16. 65
  17. 12
  18. 150
  19. 17
  20. 61
  21. 5
  22. 24
  23. 8
  24. 4
  25. 3
  26. 50
  27. 14
  28. 99
  29. 13
  30. 1.4
  31. 103
  32. 2
  33. 2
  34. 22
  35. 50
  36. 80
  37. 29
  38. 7/10
  39. 25
  40. 25

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