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Number Skills Practice Worksheet

Quantitative aptitude lesson 10: Practice: number skills · Set 552 · 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.Round 25223 to the nearest hundred.
  2. 2.Round 61495 to the nearest hundred.
  3. 3.A hall floor is 250 cm long and 200 cm wide. It is covered with the largest square tiles that fit exactly. How many tiles are needed?
  4. 4.The HCF of two numbers is 7 and their LCM is 84. One of the numbers is 28. What is the other number?
  5. 5.How many factors does 91 have?
  6. 6.2/3 + 6/7 =
  7. 7.Which is closest to 697 × 40? (Round each number first.) (a) 56000 (b) 28000 (c) 280000 (d) 2800
  8. 8.10.4 ÷ 2 =
  9. 9.Find the smallest number bigger than 15 that leaves a remainder of 1 when divided by 15, 5 or 10.
  10. 10.The ratio of boys to girls in a class is 7 : 8. There are 14 boys. How many girls are there?
  11. 11.If 10 pencil boxes cost ₹350, how much do 5 pencil boxes cost (in ₹)?
  12. 12.The HCF of two numbers is 9 and their LCM is 189. One of the numbers is 63. What is the other number?
  13. 13.Vivaan takes 40 seconds and Saanvi takes 75 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. 14.81 ÷ 9 × 8 + 3 =
  15. 15.A car goes 125 km on 5 litres of petrol. How far can it go on 30 litres (in km)?
  16. 16.If 4 cricket balls cost ₹68, how much do 3 cricket balls cost (in ₹)?
  17. 17.Find the HCF of 49 and 35.
  18. 18.2/5 of 30 + 5 × 6 =
  19. 19.Round 63.78 to one decimal place. =
  20. 20.Round 69.69 to one decimal place. =
  21. 21.Round 47.71 to one decimal place. =
  22. 22.Find the smallest number bigger than 12 that leaves a remainder of 4 when divided by 6, 12 or 9.
  23. 23.Write 3/4 as a percent.
  24. 24.Which is closest to 197 × 61? (Round each number first.) (a) 1200 (b) 120000 (c) 24000 (d) 12000
  25. 25.Which is closest to 399 ÷ 19? (a) 200 (b) 20 (c) 10 (d) 40
  26. 26.How many factors does 57 have?
  27. 27.26 − 12 ÷ 6 × 4 =
  28. 28.5 × (28 − 26) + 44 ÷ 4 =
  29. 29.What percent of 200 is 162?
  30. 30.The HCF of two numbers is 5 and their LCM is 210. One of the numbers is 35. What is the other number?
  31. 31.50% of a number is 155. What is the number?
  32. 32.What is 15% of 580?
  33. 33.If 6 kg of rice costs ₹306, how many kg can you buy for ₹102?
  34. 34.How many factors does 89 have?
  35. 35.1.7 × 4 =
  36. 36.What is the smallest number you must take away from 673 so that it divides exactly by 13?
  37. 37.1/2 of 12 + 4 × 5 =
  38. 38.A car goes 180 km on 10 litres of petrol. How far can it go on 5 litres (in km)?
  39. 39.How many factors does 81 have?
  40. 40.3 × (22 − 3) + 24 ÷ 6 =

Answer key

  1. 25200
  2. 61500
  3. 20
  4. 21
  5. 4
  6. 32/21
  7. 28000
  8. 5.2
  9. 31
  10. 16
  11. 175
  12. 27
  13. 600
  14. 75
  15. 750
  16. 51
  17. 7
  18. 42
  19. 63.8
  20. 69.7
  21. 47.7
  22. 40
  23. 75
  24. 12000
  25. 20
  26. 4
  27. 18
  28. 21
  29. 81
  30. 30
  31. 310
  32. 87
  33. 2
  34. 2
  35. 6.8
  36. 10
  37. 26
  38. 90
  39. 5
  40. 61

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