Mental Maths Questions Worksheet for Class 5

Mental maths lesson 19: Mixed mental challenge · Set 48 · 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. 1.51 + ? = 100
2. 2.78 + 8 =
3. 3.29 × 4 =
4. 4.82 − 9 =
5. 5.12 + 11 =
6. 6.80 − 28 =
7. 7.96 ÷ 4 =
8. 8.486 ÷ 6 =
9. 9.You buy a pencil box for ₹223 and pay with a ₹500 note. How much change do you get, in rupees?
10. 10.Best estimate of 774 + 271? (a) 900 (b) 1300 (c) 1100
11. 11.7 + 8 =
12. 12.You start your homework at 1:40 and finish at 3:05. How many minutes did you work?
13. 13.Best estimate of 855 + 602? (a) 1500 (b) 1700 (c) 1300
14. 14.92 − 54 =
15. 15.Double 89 =
16. 16.Double 61 =
17. 17.25 × 8 =
18. 18.96 − 78 =
19. 19.5% of ₹40 =
20. 20.A film starts at 8:50 and ends at 10:05. How many minutes long is the film?
21. 21.A cricket match starts at 6:15 and the first innings ends at 6:55. How many minutes did the innings last?
22. 22.13 + 12 =
23. 23.11 + 12 =
24. 24.A train leaves at 8:00 and reaches the next city at 10:45. How many minutes is the journey?
25. 25.79 + 29 =
26. 26.12 × 8 =
27. 27.25% of ₹720 =
28. 28.29 + 3 =
29. 29.110 − 67 =
30. 30.10% of ₹680 =
31. 31.40 × 4 =
32. 32.74 − 32 =
33. 33.67 − 33 =
34. 34.22² =
35. 35.73 + 29 =
36. 36.335 + 99 =
37. 37.67 children stand in rows of 5. How many full rows can they make?
38. 38.10% of ₹790 =
39. 39.14 + 16 =
40. 40.Best estimate of 709 + 659? (a) 1400 (b) 1200 (c) 1600

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