Mental Maths Questions Worksheet for Class 5

Mental maths lesson 19: Mixed mental challenge · Set 490 · 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. 1.27 + 9 =
2. 2.15 × 6 =
3. 3.A film starts at 7:55 and ends at 9:50. How many minutes long is the film?
4. 4.46 × 3 =
5. 5.48 ÷ 4 =
6. 6.60 − 27 =
7. 7.86 + 5 =
8. 8.77 − 47 =
9. 9.5% of ₹700 =
10. 10.Half of 176 =
11. 11.88 ÷ 8 =
12. 12.Best estimate of 86 × 30? (a) 27000 (b) 2700 (c) 270
13. 13.A train leaves at 8:50 and reaches the next city at 9:30. How many minutes is the journey?
14. 14.Best estimate of 811 + 358? (a) 1000 (b) 1200 (c) 1400
15. 15.69 − 9 =
16. 16.34 children stand in rows of 5. How many full rows can they make?
17. 17.25% of ₹830 =
18. 18.96 − 26 =
19. 19.216 ÷ 8 =
20. 20.39 × 8 =
21. 21.68 − 25 =
22. 22.27 + 6 =
23. 23.A train leaves at 5:10 and reaches the next city at 8:30. How many minutes is the journey?
24. 24.Double 24 =
25. 25.78 − 45 =
26. 26.9 + ? = 10
27. 27.56 + 9 =
28. 28.38 + ? = 100
29. 29.Best estimate of 97 × 86? (a) 900 (b) 9000 (c) 90000
30. 30.What is the remainder when 31 is divided by 3?
31. 31.83 − 43 =
32. 32.55 + 22 =
33. 33.24 × 4 =
34. 34.Best estimate of 741 + 306? (a) 1000 (b) 800 (c) 1200
35. 35.A cricket match starts at 6:20 and the first innings ends at 8:55. How many minutes did the innings last?
36. 36.93 ÷ 3 =
37. 37.102 − 73 =
38. 38.You buy a pencil box for ₹258 and pay with a ₹500 note. How much change do you get, in rupees?
39. 39.58 − 32 =
40. 40.Double 98 =

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