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Number Skills Practice Worksheet

Quantitative aptitude lesson 10: Practice: number skills · Set 906 · 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. 1.1/7 of 84 + 4 × 4 =
  2. 2.6 painters can paint a school in 18 days. How many days would 4 painters take, working at the same speed?
  3. 3.15% of a number is 90. What is the number?
  4. 4.1/2 − 1/7 =
  5. 5.Vivaan takes 45 seconds and Ishaan 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?
  6. 6.The HCF of two numbers is 7 and their LCM is 441. One of the numbers is 49. What is the other number?
  7. 7.A hall floor is 315 cm long and 135 cm wide. It is covered with the largest square tiles that fit exactly. How many tiles are needed?
  8. 8.Find the LCM of 36 and 32.
  9. 9.7 painters can paint a school in 8 days. How many days would 2 painters take, working at the same speed?
  10. 10.9 × (25 − 4) + 8 ÷ 2 =
  11. 11.24 ÷ 6 × 6 + 10 =
  12. 12.Which is closest to 402 × 81? (Round each number first.) (a) 32000 (b) 3200 (c) 320000 (d) 64000
  13. 13.How many factors does 85 have?
  14. 14.Find the LCM of 3, 9 and 6.
  15. 15.Find the LCM of 2, 8 and 13.
  16. 16.Which is closest to 697 × 30? (Round each number first.) (a) 42000 (b) 210000 (c) 21000 (d) 2100
  17. 17.How many factors does 45 have?
  18. 18.Round 70077 to the nearest hundred.
  19. 19.7 × (27 − 20) + 14 ÷ 7 =
  20. 20.Divide ₹390 between Tara and Saanvi in the ratio 7 : 3. How much does Tara get (in ₹)?
  21. 21.Round 74201 to the nearest thousand.
  22. 22.Find the HCF of 70 and 84.
  23. 23.30 + 4 × 2 − 20 =
  24. 24.A car goes 51 km on 3 litres of petrol. How far can it go on 36 litres (in km)?
  25. 25.Find the smallest number bigger than 15 that leaves a remainder of 1 when divided by 15, 3 or 6.
  26. 26.Meera takes 90 seconds and Saanvi takes 54 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. 27.3/4 − 4/6 =
  28. 28.The HCF of two numbers is 3 and their LCM is 189. One of the numbers is 27. What is the other number?
  29. 29.80% of a number is 80. What is the number?
  30. 30.1/2 of 10 + 3 × 2 =
  31. 31.75% of a number is 30. What is the number?
  32. 32.A car goes 119 km on 7 litres of petrol. How far can it go on 13 litres (in km)?
  33. 33.Which is closest to 1193 ÷ 19? (a) 60 (b) 30 (c) 120 (d) 600
  34. 34.6/9 − 2/7 =
  35. 35.Find the third proportional to 8 and 16 (that is, 8 : 16 = 16 : ?).
  36. 36.How many factors does 44 have?
  37. 37.A hostel has enough food for 4 students for 15 days. How many days will the same food last for 10 students?
  38. 38.A hostel has enough food for 2 students for 14 days. How many days will the same food last for 4 students?
  39. 39.The HCF of two numbers is 7 and their LCM is 392. One of the numbers is 56. What is the other number?
  40. 40.Find the LCM of 9, 8 and 3.

Answer key

  1. 28
  2. 27
  3. 600
  4. 5/14
  5. 360
  6. 63
  7. 21
  8. 288
  9. 28
  10. 193
  11. 34
  12. 32000
  13. 4
  14. 18
  15. 104
  16. 21000
  17. 6
  18. 70100
  19. 51
  20. 273
  21. 74000
  22. 14
  23. 18
  24. 612
  25. 31
  26. 270
  27. 1/12
  28. 21
  29. 100
  30. 11
  31. 40
  32. 221
  33. 60
  34. 8/21
  35. 32
  36. 6
  37. 6
  38. 7
  39. 49
  40. 72

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