Mental Maths Questions Worksheet for Class 5

Mental maths lesson 19: Mixed mental challenge · Set 756 · 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. 1.46 + 25 =
2. 2.91 × 4 =
3. 3.55 + 29 =
4. 4.549 ÷ 9 =
5. 5.288 ÷ 8 =
6. 6.A train leaves at 4:25 and reaches the next city at 6:45. How many minutes is the journey?
7. 7.87 − 9 =
8. 8.68 + ? = 100
9. 9.38 + 4 =
10. 10.Half of 100 =
11. 11.4 + ? = 10
12. 12.Best estimate of 351 + 288? (a) 900 (b) 500 (c) 700
13. 13.36 × 6 =
14. 14.Double 21 =
15. 15.A train leaves at 8:15 and reaches the next city at 10:45. How many minutes is the journey?
16. 16.26 × 8 =
17. 17.You buy a cricket ball for ₹89 and pay with a ₹100 note. How much change do you get, in rupees?
18. 18.Double 35 =
19. 19.Half of 188 =
20. 20.Best estimate of 29 × 63? (a) 1800 (b) 180 (c) 18000
21. 21.53 + 9 =
22. 22.417 + 99 =
23. 23.55 − 9 =
24. 24.75 − 26 =
25. 25.40 − 9 =
26. 26.7 + 8 =
27. 27.A film starts at 2:00 and ends at 3:15. How many minutes long is the film?
28. 28.28 + 30 =
29. 29.17 + 19 =
30. 30.44 + ? = 100
31. 31.66 − 56 =
32. 32.71 × 8 =
33. 33.31 + 37 =
34. 34.72 + 62 =
35. 35.6 + 7 =
36. 36.180 ÷ 4 =
37. 37.You buy a water bottle for ₹21 and a pen for ₹16. You pay with a ₹100 note. How much change do you get, in rupees?
38. 38.65 + 6 =
39. 39.27 + 26 =
40. 40.7 + 9 =

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