Mental Maths Questions Worksheet for Class 5

Mental maths lesson 19: Mixed mental challenge · Set 749 · 40 questions

How to do it in your head (Look first): A 9, 19 or 99 → round and adjust. Two close numbers → count up (or near doubles when adding). × or ÷ by 4 or 8 → double or halve; other sums → split into tens and ones.

1. 1.Half of 42 =
2. 2.108 ÷ 4 =
3. 3.58 × 5 =
4. 4.15 + 9 =
5. 5.50% of ₹660 =
6. 6.You start your homework at 1:45 and finish at 2:30. How many minutes did you work?
7. 7.10% of ₹220 =
8. 8.83 + 14 =
9. 9.A film starts at 3:15 and ends at 5:10. How many minutes long is the film?
10. 10.16 + 17 =
11. 11.72 − 40 =
12. 12.49 + 9 =
13. 13.12² =
14. 14.You buy a pencil box for ₹37 and a pen for ₹22. You pay with a ₹100 note. How much change do you get, in rupees?
15. 15.24 + 29 =
16. 16.60 children stand in rows of 9. How many full rows can they make?
17. 17.160 ÷ 4 =
18. 18.You buy a box of crayons for ₹240 and pay with a ₹500 note. How much change do you get, in rupees?
19. 19.A film starts at 1:20 and ends at 2:10. How many minutes long is the film?
20. 20.26 + 7 =
21. 21.144 ÷ 4 =
22. 22.85 + 52 =
23. 23.Best estimate of 149 + 851? (a) 1000 (b) 800 (c) 1200
24. 24.37 × 3 =
25. 25.A film starts at 2:00 and ends at 3:05. How many minutes long is the film?
26. 26.144 ÷ 8 =
27. 27.41 + 19 =
28. 28.35 − 29 =
29. 29.656 ÷ 8 =
30. 30.A film starts at 6:50 and ends at 7:15. How many minutes long is the film?
31. 31.25 + 27 =
32. 32.44 × 4 =
33. 33.You start your homework at 3:45 and finish at 6:55. How many minutes did you work?
34. 34.19² =
35. 35.81 + 72 =
36. 36.53 + 38 =
37. 37.13 × 8 =
38. 38.55 − 37 =
39. 39.28 × 9 =
40. 40.Best estimate of 348 + 749? (a) 1000 (b) 1200 (c) 800

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