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Number Skills Practice Worksheet

Quantitative aptitude lesson 10: Practice: number skills · Set 547 · 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.What is the smallest number you must take away from 693 so that it divides exactly by 12?
  2. 2.Divide ₹484 between Ishaan and Arjun in the ratio 3 : 8. How much does Arjun get (in ₹)?
  3. 3.What is the smallest number you must add to 827 so that it divides exactly by 7?
  4. 4.Arjun takes 54 seconds and Karan takes 48 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?
  5. 5.27 − 12 ÷ 3 × 3 =
  6. 6.2 × (18 − 4) + 48 ÷ 6 =
  7. 7.8 painters can paint a school in 9 days. How many days would 24 painters take, working at the same speed?
  8. 8.Two tanks hold 40 litres and 140 litres of milk. What is the biggest can (in litres) that can empty both tanks exactly, with no milk left over?
  9. 9.If 7 kg of rice costs ₹567, how many kg can you buy for ₹1134?
  10. 10.Find the LCM of 6, 15 and 9.
  11. 11.30 + 5 × 4 − 3 =
  12. 12.If 8 kg of rice costs ₹624, how many kg can you buy for ₹1170?
  13. 13.Find the smallest number bigger than 15 that leaves a remainder of 1 when divided by 10, 15 or 5.
  14. 14.The HCF of two numbers is 3 and their LCM is 63. One of the numbers is 21. What is the other number?
  15. 15.2/3 + 9/12 =
  16. 16.If 4 kites cost ₹108, how much do 20 kites cost (in ₹)?
  17. 17.Find the LCM of 8, 9 and 3.
  18. 18.Divide ₹279 between Pooja and Meera in the ratio 4 : 5. How much does Meera get (in ₹)?
  19. 19.Find the LCM of 15, 2 and 7.
  20. 20.Write 1/20 as a percent.
  21. 21.If 8 mangoes cost ₹48, how much do 5 mangoes cost (in ₹)?
  22. 22.7.9 × 3 =
  23. 23.Divide ₹55 between Nisha and Kabir in the ratio 5 : 6. How much does Nisha get (in ₹)?
  24. 24.6.3 ÷ 3 =
  25. 25.A car goes 63 km on 7 litres of petrol. How far can it go on 16 litres (in km)?
  26. 26.Which is closest to 603 × 60? (Round each number first.) (a) 360000 (b) 36000 (c) 72000 (d) 3600
  27. 27.How many factors does 86 have?
  28. 28.Kavya takes 54 seconds and Pooja 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?
  29. 29.Which is closest to 602 + 804 + 701? (a) 2100 (b) 2300 (c) 2000 (d) 2200
  30. 30.If 6 kg of rice costs ₹480, how many kg can you buy for ₹400?
  31. 31.How many factors does 32 have?
  32. 32.42 − 16 ÷ 8 × 9 =
  33. 33.1/3 × 2/11 =
  34. 34.Ishaan scored 20 marks out of 80 in a test. What percentage did Ishaan score?
  35. 35.If 5 kg of rice costs ₹415, how many kg can you buy for ₹996?
  36. 36.Find the smallest number bigger than 12 that leaves a remainder of 3 when divided by 12, 6 or 5.
  37. 37.40 − 16 ÷ 4 × 2 =
  38. 38.The HCF of two numbers is 2 and their LCM is 36. One of the numbers is 18. What is the other number?
  39. 39.2/8 + 4/6 =
  40. 40.(7 + 8) × 4 − 29 =

Answer key

  1. 9
  2. 352
  3. 6
  4. 432
  5. 15
  6. 36
  7. 3
  8. 20
  9. 14
  10. 90
  11. 47
  12. 15
  13. 31
  14. 9
  15. 17/12
  16. 540
  17. 72
  18. 155
  19. 210
  20. 5
  21. 30
  22. 23.7
  23. 25
  24. 2.1
  25. 144
  26. 36000
  27. 4
  28. 270
  29. 2100
  30. 5
  31. 6
  32. 24
  33. 2/33
  34. 25
  35. 12
  36. 63
  37. 32
  38. 4
  39. 11/12
  40. 31

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