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Number Skills Practice Worksheet

Quantitative aptitude lesson 10: Practice: number skills · Set 819 · 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.The ratio of boys to girls in a class is 8 : 3. There are 16 boys. How many girls are there?
  2. 2.What is the smallest number you must add to 746 so that it divides exactly by 6?
  3. 3.Which is closest to 392 ÷ 21? (a) 40 (b) 10 (c) 200 (d) 20
  4. 4.What is the smallest number you must add to 224 so that it divides exactly by 3?
  5. 5.What is 9/10 of ₹30?
  6. 6.The ratio of boys to girls in a class is 9 : 4. There are 27 boys. How many girls are there?
  7. 7.3 × (22 − 16) + 96 ÷ 8 =
  8. 8.1/2 × 4/6 =
  9. 9.The ratio of boys to girls in a class is 9 : 2. There are 27 boys. How many girls are there?
  10. 10.(5 + 9) × 7 − 30 =
  11. 11.The ratio of boys to girls in a class is 3 : 5. There are 6 boys. How many girls are there?
  12. 12.Find the HCF of 10 and 6.
  13. 13.Find the smallest number bigger than 15 that leaves a remainder of 4 when divided by 12, 15 or 6.
  14. 14.How many factors does 62 have?
  15. 15.The HCF of two numbers is 4 and their LCM is 288. One of the numbers is 32. What is the other number?
  16. 16.4 painters can paint a school in 15 days. How many days would 20 painters take, working at the same speed?
  17. 17.6 painters can paint a school in 22 days. How many days would 12 painters take, working at the same speed?
  18. 18.Find the smallest number bigger than 8 that leaves a remainder of 2 when divided by 3, 5 or 8.
  19. 19.Pooja takes 40 seconds and Kabir takes 30 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. 20.7.56 + 1.7 =
  21. 21.9 : 12 = 27 : ?
  22. 22.Which of these numbers divides exactly by 8? (a) 1521 (b) 7160 (c) 5796 (d) 2773
  23. 23.Divide ₹144 between Sneha and Saanvi in the ratio 3 : 1. How much does Sneha get (in ₹)?
  24. 24.Write 9/20 as a percent.
  25. 25.Sneha scored 16 marks out of 20 in a test. What percentage did Sneha score?
  26. 26.Isha takes 45 seconds and Manav takes 36 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?
  27. 27.Round 77589 to the nearest ten.
  28. 28.(3 + 13) × 3 − 24 =
  29. 29.Find the LCM of 9 and 24.
  30. 30.14 − 14 ÷ 7 × 4 =
  31. 31.If 4 cricket balls cost ₹12, how much do 16 cricket balls cost (in ₹)?
  32. 32.Divide ₹561 between Arjun and Aditya in the ratio 2 : 9. How much does Arjun get (in ₹)?
  33. 33.62 − 36 ÷ 6 × 7 =
  34. 34.Find the HCF of 72 and 40.
  35. 35.Divide ₹315 between Vivaan and Ananya in the ratio 7 : 2. How much does Vivaan get (in ₹)?
  36. 36.3/4 × 2/12 =
  37. 37.49 + 4 × 10 − 47 =
  38. 38.Divide ₹150 between Zoya and Ishaan in the ratio 1 : 2. How much does Ishaan get (in ₹)?
  39. 39.Divide ₹156 between Vivaan and Diya in the ratio 7 : 6. How much does Vivaan get (in ₹)?
  40. 40.Find the HCF of 16 and 20.

Answer key

  1. 6
  2. 4
  3. 20
  4. 1
  5. 27
  6. 12
  7. 30
  8. 1/3
  9. 6
  10. 68
  11. 10
  12. 2
  13. 64
  14. 4
  15. 36
  16. 3
  17. 11
  18. 122
  19. 120
  20. 9.26
  21. 36
  22. 7160
  23. 108
  24. 45
  25. 80
  26. 180
  27. 77590
  28. 24
  29. 72
  30. 6
  31. 48
  32. 102
  33. 20
  34. 8
  35. 245
  36. 1/8
  37. 42
  38. 100
  39. 84
  40. 4

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