Mental Maths Questions Worksheet for Class 5

Mental maths lesson 19: Mixed mental challenge · Set 201 · 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. 1.83 − 63 =
2. 2.25² =
3. 3.56 × 4 =
4. 4.11² =
5. 5.Half of 182 =
6. 6.21 + 20 =
7. 7.A cricket match starts at 4:10 and the first innings ends at 6:50. How many minutes did the innings last?
8. 8.96 ÷ 8 =
9. 9.79 + 26 =
10. 10.A film starts at 3:20 and ends at 4:45. How many minutes long is the film?
11. 11.69 + 2 =
12. 12.29 + 9 =
13. 13.86 + 9 =
14. 14.116 ÷ 4 =
15. 15.144 ÷ 8 =
16. 16.25% of ₹410 =
17. 17.95 × 6 =
18. 18.85 + 9 =
19. 19.29 × 8 =
20. 20.Best estimate of 23 × 88? (a) 18000 (b) 1800 (c) 180
21. 21.10% of ₹500 =
22. 22.26 + 27 =
23. 23.37 + 7 =
24. 24.Best estimate of 86 × 77? (a) 7200 (b) 720 (c) 72000
25. 25.13 + 14 =
26. 26.98 − 57 =
27. 27.You buy a cricket ball for ₹87 and pay with a ₹100 note. How much change do you get, in rupees?
28. 28.216 ÷ 8 =
29. 29.93 − 19 =
30. 30.A cricket match starts at 8:25 and the first innings ends at 10:25. How many minutes did the innings last?
31. 31.What is the remainder when 57 is divided by 4?
32. 32.204 ÷ 4 =
33. 33.Double 19 =
34. 34.81 + 89 =
35. 35.144 ÷ 4 =
36. 36.50% of ₹130 =
37. 37.360 − 99 =
38. 38.Half of 128 =
39. 39.51 − 29 =
40. 40.5 + ? = 10

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