Mental Maths Questions Worksheet for Class 5

Mental maths lesson 19: Mixed mental challenge · Set 6 · 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.A film starts at 2:20 and ends at 3:05. How many minutes long is the film?
2. 2.18 − 9 =
3. 3.Best estimate of 665 + 296? (a) 1200 (b) 1000 (c) 800
4. 4.17² =
5. 5.704 − 99 =
6. 6.87 − 63 =
7. 7.You start your homework at 2:05 and finish at 2:50. How many minutes did you work?
8. 8.84 + ? = 100
9. 9.57 × 4 =
10. 10.A cricket match starts at 7:25 and the first innings ends at 9:30. How many minutes did the innings last?
11. 11.41 + 57 =
12. 12.380 ÷ 4 =
13. 13.19 + 20 =
14. 14.505 − 475 =
15. 15.A cricket match starts at 2:15 and the first innings ends at 4:15. How many minutes did the innings last?
16. 16.12² =
17. 17.83 − 26 =
18. 18.You buy a pencil box for ₹21 and pay with a ₹100 note. How much change do you get, in rupees?
19. 19.14 + ? = 100
20. 20.25 + 8 =
21. 21.76 × 7 =
22. 22.75 + 7 =
23. 23.59 − 46 =
24. 24.25% of ₹830 =
25. 25.Double 18 =
26. 26.5% of ₹560 =
27. 27.You start your homework at 4:15 and finish at 5:15. How many minutes did you work?
28. 28.Best estimate of 311 + 661? (a) 1000 (b) 800 (c) 1200
29. 29.15 × 7 =
30. 30.68 × 4 =
31. 31.11 + 13 =
32. 32.744 ÷ 8 =
33. 33.68 + 83 =
34. 34.You buy a box of crayons for ₹25 and pay with a ₹100 note. How much change do you get, in rupees?
35. 35.93 − 19 =
36. 36.What is the remainder when 14 is divided by 3?
37. 37.59 + 9 =
38. 38.113 − 91 =
39. 39.60 + 59 =
40. 40.144 ÷ 8 =

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