Number Skills Practice Worksheet

Quantitative aptitude lesson 10: Practice: number skills · Set 869 · 40 questions

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?

1. 1.What is the smallest number you must add to 289 so that it divides exactly by 13?
2. 2.17 − 4 ÷ 2 × 3 =
3. 3.What is the smallest number you must add to 201 so that it divides exactly by 13?
4. 4.60% of a number is 237. What is the number?
5. 5.Two tanks hold 210 litres and 60 litres of milk. What is the biggest can (in litres) that can empty both tanks exactly, with no milk left over?
6. 6.Which is closest to 904 + 495 + 603? (a) 1900 (b) 2100 (c) 2200 (d) 2000
7. 7.10 painters can paint a school in 10 days. How many days would 20 painters take, working at the same speed?
8. 8.If 9 notebooks cost ₹108, how much do 3 notebooks cost (in ₹)?
9. 9.20.1 ÷ 3 =
10. 10.Which is closest to 500 × 38? (Round each number first.) (a) 200000 (b) 2000 (c) 20000 (d) 40000
11. 11.Find the third proportional to 6 and 30 (that is, 6 : 30 = 30 : ?).
12. 12.The HCF of two numbers is 6 and their LCM is 72. One of the numbers is 18. What is the other number?
13. 13.Which is closest to 804 × 69? (Round each number first.) (a) 112000 (b) 56000 (c) 5600 (d) 560000
14. 14.Find the LCM of 2, 4 and 5.
15. 15.56 ÷ 8 × 2 + 15 =
16. 16.Find the HCF of 6 and 4.
17. 17.Which of these numbers divides exactly by 9? (a) 1961 (b) 2295 (c) 5550 (d) 6344
18. 18.Find the HCF of 70 and 42.
19. 19.2/3 × 3/10 =
20. 20.Two tanks hold 120 litres and 270 litres of milk. What is the biggest can (in litres) that can empty both tanks exactly, with no milk left over?
21. 21.Nisha takes 36 seconds and Sneha takes 90 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?
22. 22.A hall floor is 300 cm long and 240 cm wide. It is covered with the largest square tiles that fit exactly. How many tiles are needed?
23. 23.A hall floor is 300 cm long and 120 cm wide. It is covered with the largest square tiles that fit exactly. How many tiles are needed?
24. 24.Round 77.78 to one decimal place. =
25. 25.How many factors does 26 have?
26. 26.Saanvi takes 45 seconds and Rohan 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.If 6 kites cost ₹174, how much do 11 kites cost (in ₹)?
28. 28.2/7 + 7/11 =
29. 29.A hall floor is 180 cm long and 135 cm wide. It is covered with the largest square tiles that fit exactly. How many tiles are needed?
30. 30.Find the third proportional to 6 and 18 (that is, 6 : 18 = 18 : ?).
31. 31.How many factors does 100 have?
32. 32.60 ÷ 6 × 5 + 13 =
33. 33.Find the HCF of 26 and 117.
34. 34.Divide ₹583 between Kabir and Kavya in the ratio 4 : 7. How much does Kabir get (in ₹)?
35. 35.Two tanks hold 40 litres and 45 litres of milk. What is the biggest can (in litres) that can empty both tanks exactly, with no milk left over?
36. 36.A hall floor is 140 cm long and 120 cm wide. It is covered with the largest square tiles that fit exactly. How many tiles are needed?
37. 37.1/2 of 6 + 6 × 2 =
38. 38.What is the smallest number you must take away from 847 so that it divides exactly by 9?
39. 39.13 + 11 × 4 − 9 =
40. 40.(11 + 19) × 7 − 8 =

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