Mental Maths Questions Worksheet for Class 5

Mental maths lesson 19: Mixed mental challenge · Set 787 · 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. 1.360 − 99 =
2. 2.509 − 476 =
3. 3.50% of ₹650 =
4. 4.9 + 10 =
5. 5.Double 88 =
6. 6.You start your homework at 8:05 and finish at 8:40. How many minutes did you work?
7. 7.31 + ? = 100
8. 8.23² =
9. 9.81 − 41 =
10. 10.85 − 55 =
11. 11.21² =
12. 12.5% of ₹210 =
13. 13.98 × 5 =
14. 14.28 + ? = 100
15. 15.315 − 296 =
16. 16.30 + 29 =
17. 17.21 × 3 =
18. 18.A film starts at 3:25 and ends at 5:35. How many minutes long is the film?
19. 19.Best estimate of 96 × 47? (a) 500 (b) 50000 (c) 5000
20. 20.61 − 48 =
21. 21.You start your homework at 5:10 and finish at 7:25. How many minutes did you work?
22. 22.230 − 196 =
23. 23.14 + 16 =
24. 24.17 + 19 =
25. 25.17² =
26. 26.432 + 99 =
27. 27.227 − 197 =
28. 28.You buy a storybook for ₹18 and a pen for ₹13. You pay with a ₹100 note. How much change do you get, in rupees?
29. 29.61 × 8 =
30. 30.51 × 4 =
31. 31.You buy a notebook for ₹73 and pay with a ₹100 note. How much change do you get, in rupees?
32. 32.A film starts at 5:55 and ends at 6:25. How many minutes long is the film?
33. 33.What is the remainder when 67 is divided by 7?
34. 34.58 children stand in rows of 7. How many full rows can they make?
35. 35.66 + 37 =
36. 36.73 + 22 =
37. 37.A film starts at 2:05 and ends at 5:00. How many minutes long is the film?
38. 38.46 + 9 =
39. 39.68 × 7 =
40. 40.10% of ₹250 =

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