Mental Maths Questions Worksheet for Class 5

Mental maths lesson 19: Mixed mental challenge · Set 25 · 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. 1.31 − 19 =
2. 2.81 + 13 =
3. 3.A film starts at 1:30 and ends at 4:05. How many minutes long is the film?
4. 4.506 + 99 =
5. 5.224 ÷ 4 =
6. 6.What is the remainder when 41 is divided by 6?
7. 7.9 + 4 =
8. 8.You buy a notebook for ₹32 and a pen for ₹25. You pay with a ₹100 note. How much change do you get, in rupees?
9. 9.84 − 78 =
10. 10.78 − 47 =
11. 11.72 ÷ 4 =
12. 12.15 × 4 =
13. 13.98 − 12 =
14. 14.19 + 21 =
15. 15.51 − 40 =
16. 16.78 ÷ 6 =
17. 17.Half of 186 =
18. 18.27 children stand in rows of 6. How many full rows can they make?
19. 19.You buy a notebook for ₹122 and pay with a ₹500 note. How much change do you get, in rupees?
20. 20.78 × 3 =
21. 21.88 + 8 =
22. 22.21 + 9 =
23. 23.49 + 6 =
24. 24.15² =
25. 25.29 + 31 =
26. 26.46 children stand in rows of 8. How many full rows can they make?
27. 27.49 + ? = 100
28. 28.Best estimate of 702 + 660? (a) 1400 (b) 1200 (c) 1600
29. 29.13² =
30. 30.148 ÷ 4 =
31. 31.44 × 4 =
32. 32.37 × 3 =
33. 33.You start your homework at 5:10 and finish at 5:55. How many minutes did you work?
34. 34.26 + 29 =
35. 35.39 × 4 =
36. 36.62 + 52 =
37. 37.34 × 4 =
38. 38.48 + 5 =
39. 39.102 − 94 =
40. 40.58 − 25 =

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