Mental Maths Questions Worksheet for Class 5

Mental maths lesson 19: Mixed mental challenge · Set 776 · 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.Best estimate of 97 × 56? (a) 60000 (b) 600 (c) 6000
2. 2.Best estimate of 50 × 81? (a) 4000 (b) 40000 (c) 400
3. 3.7 + 8 =
4. 4.512 − 484 =
5. 5.You start your homework at 5:50 and finish at 8:20. How many minutes did you work?
6. 6.36 + 13 =
7. 7.79 − 45 =
8. 8.62 − 48 =
9. 9.86 − 25 =
10. 10.A film starts at 5:25 and ends at 6:00. How many minutes long is the film?
11. 11.10% of ₹90 =
12. 12.6 + 7 =
13. 13.46 × 4 =
14. 14.A film starts at 4:00 and ends at 6:55. How many minutes long is the film?
15. 15.35 + 7 =
16. 16.You buy a storybook for ₹90 and pay with a ₹100 note. How much change do you get, in rupees?
17. 17.26 + 9 =
18. 18.184 ÷ 8 =
19. 19.9 + ? = 10
20. 20.52 ÷ 4 =
21. 21.14² =
22. 22.12 + 9 =
23. 23.You start your homework at 4:45 and finish at 6:05. How many minutes did you work?
24. 24.50% of ₹60 =
25. 25.31 × 8 =
26. 26.Best estimate of 654 + 200? (a) 1100 (b) 700 (c) 900
27. 27.82 − 68 =
28. 28.141 children stand in rows of 9. How many full rows can they make?
29. 29.96 × 8 =
30. 30.67 + 6 =
31. 31.What is the remainder when 35 is divided by 4?
32. 32.24 + 25 =
33. 33.23 × 4 =
34. 34.43 + ? = 100
35. 35.Best estimate of 53 × 67? (a) 3500 (b) 350 (c) 35000
36. 36.25 + 27 =
37. 37.395 ÷ 5 =
38. 38.13 + 12 =
39. 39.Half of 68 =
40. 40.70 − 29 =

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