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Number Skills Practice Worksheet

Quantitative aptitude lesson 10: Practice: number skills · Set 721 · 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.How many factors does 76 have?
  2. 2.The ratio of boys to girls in a class is 6 : 1. There are 54 boys. How many girls are there?
  3. 3.16 + 11 × 3 − 9 =
  4. 4.8 : 9 = 56 : ?
  5. 5.What is the smallest number you must add to 995 so that it divides exactly by 3?
  6. 6.What is 1/5 of 150 kg?
  7. 7.A car goes 105 km on 5 litres of petrol. How far can it go on 18 litres (in km)?
  8. 8.Find the smallest number bigger than 9 that leaves a remainder of 1 when divided by 5, 3 or 9.
  9. 9.Round 42.16 to one decimal place. =
  10. 10.Two tanks hold 180 litres and 80 litres of milk. What is the biggest can (in litres) that can empty both tanks exactly, with no milk left over?
  11. 11.Three temple bells ring every 6, 8 and 4 minutes. They ring together at 9:00 am. After how many minutes will they next ring together?
  12. 12.Divide ₹440 between Priya and Rahul in the ratio 3 : 8. How much does Rahul get (in ₹)?
  13. 13.Farhan takes 36 seconds and Saanvi 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?
  14. 14.4.19 + 2.1 =
  15. 15.If 6 kg of rice costs ₹408, how many kg can you buy for ₹136?
  16. 16.3 × (23 − 21) + 20 ÷ 2 =
  17. 17.44 − 6 ÷ 2 × 6 =
  18. 18.Find the LCM of 12, 14 and 8.
  19. 19.If 4 kg of rice costs ₹136, how many kg can you buy for ₹408?
  20. 20.Round 28.72 to one decimal place. =
  21. 21.78 − 25 ÷ 5 × 9 =
  22. 22.6.24 + 7.6 =
  23. 23.Three temple bells ring every 18, 10 and 6 minutes. They ring together at 9:00 am. After how many minutes will they next ring together?
  24. 24.Two tanks hold 180 litres and 140 litres of milk. What is the biggest can (in litres) that can empty both tanks exactly, with no milk left over?
  25. 25.Which is closest to 1604 ÷ 19? (a) 40 (b) 800 (c) 80 (d) 160
  26. 26.Nisha scored 24 marks out of 80 in a test. What percentage did Nisha score?
  27. 27.Find the HCF of 65 and 117.
  28. 28.7 × (10 − 5) + 56 ÷ 7 =
  29. 29.A hall floor is 480 cm long and 180 cm wide. It is covered with the largest square tiles that fit exactly. How many tiles are needed?
  30. 30.Find the smallest number bigger than 15 that leaves a remainder of 3 when divided by 12, 15 or 10.
  31. 31.29 − 45 ÷ 5 × 2 =
  32. 32.Which is closest to 404 + 600 + 197? (a) 1400 (b) 1100 (c) 1300 (d) 1200
  33. 33.Find the HCF of 24 and 16.
  34. 34.Find the HCF of 90 and 70.
  35. 35.Find the smallest number bigger than 9 that leaves a remainder of 3 when divided by 4, 5 or 9.
  36. 36.The ratio of boys to girls in a class is 1 : 8. There are 5 boys. How many girls are there?
  37. 37.Which is closest to 2103 ÷ 31? (a) 140 (b) 35 (c) 70 (d) 700
  38. 38.Find the LCM of 21 and 18.
  39. 39.A hall floor is 150 cm long and 90 cm wide. It is covered with the largest square tiles that fit exactly. How many tiles are needed?
  40. 40.Find the smallest number bigger than 15 that leaves a remainder of 2 when divided by 4, 15 or 10.

Answer key

  1. 6
  2. 9
  3. 40
  4. 63
  5. 1
  6. 30
  7. 378
  8. 46
  9. 42.2
  10. 20
  11. 24
  12. 320
  13. 360
  14. 6.29
  15. 2
  16. 16
  17. 26
  18. 168
  19. 12
  20. 28.7
  21. 33
  22. 13.84
  23. 90
  24. 20
  25. 80
  26. 30
  27. 13
  28. 43
  29. 24
  30. 63
  31. 11
  32. 1200
  33. 8
  34. 10
  35. 183
  36. 40
  37. 70
  38. 126
  39. 15
  40. 62

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