Mental Maths Questions Worksheet for Class 5

Mental maths lesson 19: Mixed mental challenge · Set 836 · 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. 1.28² =
2. 2.Best estimate of 97 × 33? (a) 3000 (b) 30000 (c) 300
3. 3.A film starts at 2:35 and ends at 4:45. How many minutes long is the film?
4. 4.A train leaves at 1:10 and reaches the next city at 3:40. How many minutes is the journey?
5. 5.Double 83 =
6. 6.Half of 164 =
7. 7.Double 39 =
8. 8.79 − 41 =
9. 9.A film starts at 1:30 and ends at 4:05. How many minutes long is the film?
10. 10.Best estimate of 195 + 458? (a) 700 (b) 500 (c) 900
11. 11.86 + 9 =
12. 12.144 ÷ 4 =
13. 13.67 − 41 =
14. 14.31 × 7 =
15. 15.27 + ? = 100
16. 16.24² =
17. 17.A film starts at 5:45 and ends at 8:20. How many minutes long is the film?
18. 18.17 × 8 =
19. 19.47 + 29 =
20. 20.168 ÷ 4 =
21. 21.95 − 29 =
22. 22.6 + 6 =
23. 23.211 − 195 =
24. 24.Best estimate of 74 × 54? (a) 3500 (b) 35000 (c) 350
25. 25.Best estimate of 331 + 213? (a) 500 (b) 700 (c) 300
26. 26.1004 − 985 =
27. 27.49 × 4 =
28. 28.73 − 41 =
29. 29.A film starts at 7:00 and ends at 9:20. How many minutes long is the film?
30. 30.79 − 19 =
31. 31.24 × 8 =
32. 32.54 + 22 =
33. 33.47 + 8 =
34. 34.528 ÷ 8 =
35. 35.32 + ? = 100
36. 36.73 − 21 =
37. 37.136 laddoos are packed in boxes of 9. How many laddoos are left over?
38. 38.Double 45 =
39. 39.10% of ₹580 =
40. 40.23 × 9 =

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