Mental Maths Questions Worksheet for Class 5

Mental maths lesson 19: Mixed mental challenge · Set 745 · 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.A film starts at 5:25 and ends at 6:35. How many minutes long is the film?
2. 2.94 − 48 =
3. 3.12 + 14 =
4. 4.10% of ₹620 =
5. 5.Best estimate of 631 + 349? (a) 1100 (b) 900 (c) 700
6. 6.108 − 29 =
7. 7.Half of 108 =
8. 8.19 + 18 =
9. 9.Double 51 =
10. 10.427 − 99 =
11. 11.35 + 51 =
12. 12.95 − 65 =
13. 13.96 ÷ 4 =
14. 14.16 + 18 =
15. 15.23 × 8 =
16. 16.13 × 8 =
17. 17.65 − 33 =
18. 18.224 ÷ 8 =
19. 19.75 × 3 =
20. 20.23 + 24 =
21. 21.11 + ? = 100
22. 22.You start your homework at 4:05 and finish at 6:25. How many minutes did you work?
23. 23.71 + ? = 100
24. 24.21 + 22 =
25. 25.324 ÷ 4 =
26. 26.What is the remainder when 39 is divided by 5?
27. 27.10 + 11 =
28. 28.50% of ₹220 =
29. 29.517 − 479 =
30. 30.27² =
31. 31.You start your homework at 3:30 and finish at 6:25. How many minutes did you work?
32. 32.A cricket match starts at 1:05 and the first innings ends at 2:05. How many minutes did the innings last?
33. 33.68 + 3 =
34. 34.51 + 14 =
35. 35.19 + 20 =
36. 36.A cricket match starts at 5:00 and the first innings ends at 7:00. How many minutes did the innings last?
37. 37.50% of ₹170 =
38. 38.Half of 162 =
39. 39.A film starts at 1:05 and ends at 4:10. How many minutes long is the film?
40. 40.A film starts at 5:05 and ends at 5:50. How many minutes long is the film?

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