Mental Maths Questions Worksheet for Class 5

Mental maths lesson 19: Mixed mental challenge · Set 256 · 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. 1.656 ÷ 8 =
2. 2.68 + 14 =
3. 3.26² =
4. 4.44 + 37 =
5. 5.27² =
6. 6.372 ÷ 6 =
7. 7.67 − 41 =
8. 8.84 + ? = 100
9. 9.10% of ₹870 =
10. 10.25 × 4 =
11. 11.A train leaves at 2:05 and reaches the next city at 5:05. How many minutes is the journey?
12. 12.Double 46 =
13. 13.1026 − 975 =
14. 14.67 + 9 =
15. 15.Best estimate of 64 × 63? (a) 36000 (b) 3600 (c) 360
16. 16.50% of ₹550 =
17. 17.39 + 4 =
18. 18.7 + ? = 10
19. 19.Best estimate of 26 × 33? (a) 900 (b) 9000 (c) 90
20. 20.24 + 23 =
21. 21.96 − 83 =
22. 22.A film starts at 5:30 and ends at 7:50. How many minutes long is the film?
23. 23.126 ÷ 6 =
24. 24.3 + ? = 10
25. 25.You buy a notebook for ₹26 and pay with a ₹100 note. How much change do you get, in rupees?
26. 26.27 + 29 =
27. 27.19 + 18 =
28. 28.28 × 8 =
29. 29.56 + 7 =
30. 30.29 + 4 =
31. 31.1005 − 982 =
32. 32.12 + 19 =
33. 33.You start your homework at 7:30 and finish at 9:15. How many minutes did you work?
34. 34.You buy a kite for ₹247 and pay with a ₹500 note. How much change do you get, in rupees?
35. 35.69 + 51 =
36. 36.159 ÷ 3 =
37. 37.A film starts at 5:10 and ends at 6:05. How many minutes long is the film?
38. 38.30 + 31 =
39. 39.Half of 176 =
40. 40.You buy a kite for ₹75 and pay with a ₹100 note. How much change do you get, in rupees?

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