Mental Maths Questions Worksheet for Class 5

Mental maths lesson 19: Mixed mental challenge · Set 772 · 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. 1.633 + 99 =
2. 2.You buy a storybook for ₹27 and pay with a ₹100 note. How much change do you get, in rupees?
3. 3.61 × 4 =
4. 4.17 + 16 =
5. 5.59 × 4 =
6. 6.22 + 21 =
7. 7.8 + ? = 10
8. 8.110 − 60 =
9. 9.590 + 99 =
10. 10.73 × 7 =
11. 11.75 − 21 =
12. 12.31 × 8 =
13. 13.51 × 4 =
14. 14.61 + ? = 100
15. 15.10% of ₹860 =
16. 16.47 + 9 =
17. 17.288 ÷ 4 =
18. 18.88 + ? = 100
19. 19.35 × 8 =
20. 20.28² =
21. 21.Best estimate of 192 + 731? (a) 900 (b) 1100 (c) 700
22. 22.19 + ? = 100
23. 23.74 + 12 =
24. 24.33 + 87 =
25. 25.17 + 4 =
26. 26.184 ÷ 8 =
27. 27.608 + 99 =
28. 28.You start your homework at 5:55 and finish at 8:50. How many minutes did you work?
29. 29.30 + 29 =
30. 30.You buy a cricket ball for ₹424 and pay with a ₹500 note. How much change do you get, in rupees?
31. 31.59 − 19 =
32. 32.Best estimate of 40 × 66? (a) 2800 (b) 280 (c) 28000
33. 33.75 − 63 =
34. 34.Half of 94 =
35. 35.26 × 4 =
36. 36.A film starts at 1:50 and ends at 4:45. How many minutes long is the film?
37. 37.You start your homework at 3:15 and finish at 5:25. How many minutes did you work?
38. 38.13² =
39. 39.55 − 43 =
40. 40.9 + ? = 10

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