Mental Maths Questions Worksheet for Class 5

Mental maths lesson 19: Mixed mental challenge · Set 912 · 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. 1.267 ÷ 3 =
2. 2.18² =
3. 3.45 + ? = 100
4. 4.108 ÷ 4 =
5. 5.15 + ? = 100
6. 6.43 × 3 =
7. 7.Half of 132 =
8. 8.82 + ? = 100
9. 9.20 + 19 =
10. 10.You buy a pencil box for ₹18 and pay with a ₹100 note. How much change do you get, in rupees?
11. 11.38 + 3 =
12. 12.A film starts at 4:15 and ends at 5:20. How many minutes long is the film?
13. 13.76 − 19 =
14. 14.83 + 47 =
15. 15.12 + ? = 100
16. 16.30 + 74 =
17. 17.Best estimate of 53 × 26? (a) 150 (b) 1500 (c) 15000
18. 18.78 + 4 =
19. 19.11 + 13 =
20. 20.104 ÷ 4 =
21. 21.81 − 37 =
22. 22.What is the remainder when 17 is divided by 3?
23. 23.152 ÷ 8 =
24. 24.A cricket match starts at 7:20 and the first innings ends at 7:45. How many minutes did the innings last?
25. 25.You buy a water bottle for ₹473 and pay with a ₹500 note. How much change do you get, in rupees?
26. 26.65 + 6 =
27. 27.17² =
28. 28.Half of 92 =
29. 29.216 ÷ 8 =
30. 30.54 − 24 =
31. 31.A cricket match starts at 5:35 and the first innings ends at 7:00. How many minutes did the innings last?
32. 32.What is the remainder when 109 is divided by 9?
33. 33.A train leaves at 6:25 and reaches the next city at 9:35. How many minutes is the journey?
34. 34.21 × 8 =
35. 35.47 + 29 =
36. 36.65 × 7 =
37. 37.25² =
38. 38.What is the remainder when 97 is divided by 8?
39. 39.33 × 9 =
40. 40.120 ÷ 8 =

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