Mental Maths Questions Worksheet for Class 5

Mental maths lesson 19: Mixed mental challenge · Set 296 · 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. 1.744 ÷ 8 =
2. 2.240 ÷ 8 =
3. 3.You start your homework at 1:50 and finish at 3:15. How many minutes did you work?
4. 4.264 ÷ 8 =
5. 5.50% of ₹740 =
6. 6.52 + 19 =
7. 7.40 × 4 =
8. 8.58 + 7 =
9. 9.95 − 39 =
10. 10.25% of ₹100 =
11. 11.79 + 35 =
12. 12.11 + 13 =
13. 13.Double 38 =
14. 14.29 + 31 =
15. 15.45 + 72 =
16. 16.39 + ? = 100
17. 17.54 − 35 =
18. 18.Best estimate of 88 × 66? (a) 6300 (b) 630 (c) 63000
19. 19.Best estimate of 237 + 210? (a) 400 (b) 200 (c) 600
20. 20.37 + 29 =
21. 21.4 + ? = 10
22. 22.Best estimate of 502 + 512? (a) 1000 (b) 1200 (c) 800
23. 23.Double 21 =
24. 24.You buy a notebook for ₹44 and pay with a ₹100 note. How much change do you get, in rupees?
25. 25.A train leaves at 2:15 and reaches the next city at 4:30. How many minutes is the journey?
26. 26.23 + 22 =
27. 27.A film starts at 1:20 and ends at 3:30. How many minutes long is the film?
28. 28.164 ÷ 4 =
29. 29.68 × 7 =
30. 30.873 ÷ 9 =
31. 31.236 ÷ 4 =
32. 32.Double 66 =
33. 33.You start your homework at 1:00 and finish at 2:55. How many minutes did you work?
34. 34.46 + 12 =
35. 35.Best estimate of 349 + 508? (a) 600 (b) 800 (c) 1000
36. 36.16² =
37. 37.40 + ? = 100
38. 38.85 + 13 =
39. 39.272 ÷ 8 =
40. 40.170 ÷ 5 =

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