Mental Maths Questions Worksheet for Class 5

Mental maths lesson 19: Mixed mental challenge · Set 774 · 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. 1.23 × 5 =
2. 2.7 + ? = 10
3. 3.10% of ₹470 =
4. 4.Best estimate of 284 + 556? (a) 1100 (b) 900 (c) 700
5. 5.A cricket match starts at 7:15 and the first innings ends at 10:20. How many minutes did the innings last?
6. 6.You buy a notebook for ₹47 and pay with a ₹100 note. How much change do you get, in rupees?
7. 7.122 − 85 =
8. 8.48 × 4 =
9. 9.74 + 24 =
10. 10.35 + 36 =
11. 11.51 × 7 =
12. 12.42 + 19 =
13. 13.Half of 70 =
14. 14.50% of ₹850 =
15. 15.You start your homework at 8:55 and finish at 9:30. How many minutes did you work?
16. 16.78 + 3 =
17. 17.Best estimate of 513 + 413? (a) 900 (b) 1100 (c) 700
18. 18.16 × 4 =
19. 19.Half of 72 =
20. 20.552 − 99 =
21. 21.Double 48 =
22. 22.64 ÷ 4 =
23. 23.212 − 195 =
24. 24.1027 − 984 =
25. 25.50 + 47 =
26. 26.13 − 9 =
27. 27.What is the remainder when 47 is divided by 9?
28. 28.A film starts at 7:05 and ends at 9:25. How many minutes long is the film?
29. 29.76 + 21 =
30. 30.Double 33 =
31. 31.Half of 78 =
32. 32.68 + 4 =
33. 33.51 + ? = 100
34. 34.53 − 32 =
35. 35.180 ÷ 4 =
36. 36.You buy a water bottle for ₹70 and pay with a ₹100 note. How much change do you get, in rupees?
37. 37.11² =
38. 38.81 × 4 =
39. 39.5% of ₹520 =
40. 40.22² =

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