Mental Maths Questions Worksheet for Class 5

Mental maths lesson 19: Mixed mental challenge · Set 744 · 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. 1.10% of ₹120 =
2. 2.12 + ? = 100
3. 3.72 − 61 =
4. 4.126 − 87 =
5. 5.64 − 39 =
6. 6.51 × 9 =
7. 7.50 + 81 =
8. 8.A film starts at 1:05 and ends at 3:05. How many minutes long is the film?
9. 9.208 ÷ 8 =
10. 10.81 × 3 =
11. 11.Best estimate of 31 × 34? (a) 90 (b) 9000 (c) 900
12. 12.75 + 9 =
13. 13.54 − 13 =
14. 14.25% of ₹780 =
15. 15.50% of ₹530 =
16. 16.56 ÷ 4 =
17. 17.53 − 14 =
18. 18.38 − 19 =
19. 19.Double 54 =
20. 20.6 + ? = 10
21. 21.20 × 8 =
22. 22.A cricket match starts at 6:25 and the first innings ends at 9:40. How many minutes did the innings last?
23. 23.Double 24 =
24. 24.33 + 29 =
25. 25.38 × 8 =
26. 26.40 + 19 =
27. 27.Half of 56 =
28. 28.You buy a kite for ₹86 and pay with a ₹100 note. How much change do you get, in rupees?
29. 29.What is the remainder when 45 is divided by 8?
30. 30.20 + 19 =
31. 31.14² =
32. 32.A film starts at 2:30 and ends at 5:10. How many minutes long is the film?
33. 33.What is the remainder when 67 is divided by 8?
34. 34.252 ÷ 4 =
35. 35.26² =
36. 36.26 × 9 =
37. 37.2 + ? = 10
38. 38.72 − 29 =
39. 39.You buy a cricket ball for ₹30 and pay with a ₹100 note. How much change do you get, in rupees?
40. 40.322 − 280 =

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