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Number Skills Practice Worksheet

Quantitative aptitude lesson 10: Practice: number skills · Set 715 · 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 1 : 2. There are 9 boys. How many girls are there?
  2. 2.7.06 + 2.2 =
  3. 3.What is 1/7 of 21 students?
  4. 4.A hall floor is 125 cm long and 100 cm wide. It is covered with the largest square tiles that fit exactly. How many tiles are needed?
  5. 5.What is the smallest number you must take away from 118 so that it divides exactly by 6?
  6. 6.120% of a number is 108. What is the number?
  7. 7.Which of these numbers divides exactly by 3? (a) 1636 (b) 4464 (c) 3919 (d) 4810
  8. 8.1/3 + 4/9 =
  9. 9.Find the LCM of 2, 9 and 14.
  10. 10.45 − 40 ÷ 5 × 3 =
  11. 11.7 × (16 − 2) + 54 ÷ 6 =
  12. 12.Find the HCF of 105 and 120.
  13. 13.What is the smallest number you must add to 200 so that it divides exactly by 12?
  14. 14.1/3 × 1/4 =
  15. 15.What is the smallest number you must add to 756 so that it divides exactly by 11?
  16. 16.A car goes 152 km on 8 litres of petrol. How far can it go on 11 litres (in km)?
  17. 17.If 2 bottles of juice cost ₹24, how much do 5 bottles of juice cost (in ₹)?
  18. 18.(19 + 11) × 8 − 19 =
  19. 19.Which is closest to 698 × 90? (Round each number first.) (a) 126000 (b) 630000 (c) 6300 (d) 63000
  20. 20.12 − 6 ÷ 3 × 5 =
  21. 21.What is the smallest number you must add to 929 so that it divides exactly by 12?
  22. 22.Find the smallest number bigger than 10 that leaves a remainder of 2 when divided by 5, 10 or 6.
  23. 23.What is the smallest number you must take away from 142 so that it divides exactly by 13?
  24. 24.What is 40% of 240?
  25. 25.How many factors does 55 have?
  26. 26.Find the LCM of 32 and 28.
  27. 27.Find the HCF of 135 and 60.
  28. 28.6 × (29 − 19) + 48 ÷ 4 =
  29. 29.The HCF of two numbers is 8 and their LCM is 48. One of the numbers is 16. What is the other number?
  30. 30.Two tanks hold 105 litres and 45 litres of milk. What is the biggest can (in litres) that can empty both tanks exactly, with no milk left over?
  31. 31.4.07 + 3.3 =
  32. 32.Which of these numbers divides exactly by 3? (a) 3035 (b) 7309 (c) 3795 (d) 7499
  33. 33.Find the smallest number bigger than 6 that leaves a remainder of 2 when divided by 5, 6 or 3.
  34. 34.1/2 of 12 + 8 × 9 =
  35. 35.How many factors does 47 have?
  36. 36.4/12 + 7/9 =
  37. 37.Sneha takes 40 seconds and Priya takes 45 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?
  38. 38.Which of these numbers divides exactly by 9? (a) 3171 (b) 8772 (c) 8901 (d) 8861
  39. 39.Three temple bells ring every 5, 6 and 4 minutes. They ring together at 9:00 am. After how many minutes will they next ring together?
  40. 40.45 ÷ 5 × 4 + 23 =

Answer key

  1. 18
  2. 9.26
  3. 3
  4. 20
  5. 4
  6. 90
  7. 4464
  8. 7/9
  9. 126
  10. 21
  11. 107
  12. 15
  13. 4
  14. 1/12
  15. 3
  16. 209
  17. 60
  18. 221
  19. 63000
  20. 2
  21. 7
  22. 32
  23. 12
  24. 96
  25. 4
  26. 224
  27. 15
  28. 72
  29. 24
  30. 15
  31. 7.37
  32. 3795
  33. 32
  34. 78
  35. 2
  36. 10/9
  37. 360
  38. 8901
  39. 60
  40. 59

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