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Number Skills Practice Worksheet

Quantitative aptitude lesson 10: Practice: number skills · Set 995 · 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.A hall floor is 160 cm long and 100 cm wide. It is covered with the largest square tiles that fit exactly. How many tiles are needed?
  2. 2.What is the smallest number you must take away from 718 so that it divides exactly by 12?
  3. 3.Two tanks hold 40 litres and 50 litres of milk. What is the biggest can (in litres) that can empty both tanks exactly, with no milk left over?
  4. 4.If 2 mangoes cost ₹20, how much do 8 mangoes cost (in ₹)?
  5. 5.Which is closest to 897 × 40? (Round each number first.) (a) 3600 (b) 36000 (c) 72000 (d) 360000
  6. 6.Which is closest to 699 + 501 + 398? (a) 1800 (b) 1600 (c) 1500 (d) 1700
  7. 7.1.33 + 4.5 =
  8. 8.40.8 ÷ 8 =
  9. 9.15% of a number is 42. What is the number?
  10. 10.20.7 ÷ 9 =
  11. 11.28.8 ÷ 8 =
  12. 12.80% of a number is 72. What is the number?
  13. 13.52.5 ÷ 7 =
  14. 14.Divide ₹264 between Diya and Saanvi in the ratio 1 : 7. How much does Saanvi get (in ₹)?
  15. 15.Ishaan scored 11 marks out of 20 in a test. What percentage did Ishaan score?
  16. 16.What is 15% of 560?
  17. 17.Ananya scored 15 marks out of 25 in a test. What percentage did Ananya score?
  18. 18.Find the LCM of 9 and 2.
  19. 19.Diya takes 60 seconds and Saanvi 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?
  20. 20.1.86 + 5.6 =
  21. 21.Find the third proportional to 2 and 8 (that is, 2 : 8 = 8 : ?).
  22. 22.What percent of 40 is 30?
  23. 23.24 ÷ 6 × 3 + 21 =
  24. 24.Which is closest to 303 × 29? (Round each number first.) (a) 90000 (b) 18000 (c) 9000 (d) 900
  25. 25.10 : 9 = 20 : ?
  26. 26.14 ÷ 7 × 4 + 27 =
  27. 27.How many factors does 15 have?
  28. 28.(8 + 2) × 6 − 24 =
  29. 29.Find the HCF of 48 and 40.
  30. 30.49 − 36 ÷ 6 × 4 =
  31. 31.If 3 kg of rice costs ₹150, how many kg can you buy for ₹350?
  32. 32.4.24 + 1.2 =
  33. 33.Round 61335 to the nearest hundred.
  34. 34.35 − 9 ÷ 3 × 2 =
  35. 35.The ratio of boys to girls in a class is 9 : 2. There are 27 boys. How many girls are there?
  36. 36.Find the HCF of 10 and 8.
  37. 37.Which of these numbers divides exactly by 11? (a) 1602 (b) 4380 (c) 9149 (d) 8470
  38. 38.Saanvi scored 26 marks out of 40 in a test. What percentage did Saanvi score?
  39. 39.11.6 ÷ 4 =
  40. 40.Find the LCM of 8 and 12.

Answer key

  1. 40
  2. 10
  3. 10
  4. 80
  5. 36000
  6. 1600
  7. 5.83
  8. 5.1
  9. 280
  10. 2.3
  11. 3.6
  12. 90
  13. 7.5
  14. 231
  15. 55
  16. 84
  17. 60
  18. 18
  19. 180
  20. 7.46
  21. 32
  22. 75
  23. 33
  24. 9000
  25. 18
  26. 35
  27. 4
  28. 36
  29. 8
  30. 25
  31. 7
  32. 5.44
  33. 61300
  34. 29
  35. 6
  36. 2
  37. 8470
  38. 65
  39. 2.9
  40. 24

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