Mental Maths Questions Worksheet for Class 5

Mental maths lesson 19: Mixed mental challenge · Set 695 · 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. 1.13² =
2. 2.141 + 99 =
3. 3.36 × 5 =
4. 4.5% of ₹820 =
5. 5.A train leaves at 6:20 and reaches the next city at 7:55. How many minutes is the journey?
6. 6.18 + 20 =
7. 7.A film starts at 7:35 and ends at 9:35. How many minutes long is the film?
8. 8.What is the remainder when 105 is divided by 9?
9. 9.79 + 83 =
10. 10.You buy a cricket ball for ₹456 and pay with a ₹500 note. How much change do you get, in rupees?
11. 11.65 + 29 =
12. 12.73 − 34 =
13. 13.63 × 9 =
14. 14.15² =
15. 15.10% of ₹200 =
16. 16.A train leaves at 7:25 and reaches the next city at 8:45. How many minutes is the journey?
17. 17.13 + 15 =
18. 18.21 + 20 =
19. 19.54 + 43 =
20. 20.308 − 284 =
21. 21.17 + 19 =
22. 22.You buy a box of crayons for ₹68 and pay with a ₹100 note. How much change do you get, in rupees?
23. 23.76 − 30 =
24. 24.168 ÷ 4 =
25. 25.12 + 13 =
26. 26.A cricket match starts at 3:45 and the first innings ends at 6:40. How many minutes did the innings last?
27. 27.19 + 3 =
28. 28.24² =
29. 29.94 − 42 =
30. 30.88 + 15 =
31. 31.9 + 5 =
32. 32.729 ÷ 9 =
33. 33.6 + ? = 10
34. 34.135 ÷ 3 =
35. 35.33 + 53 =
36. 36.34 + 19 =
37. 37.285 ÷ 5 =
38. 38.74 − 22 =
39. 39.Double 53 =
40. 40.26 + ? = 100

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