Mental Maths Questions Worksheet for Class 5

Mental maths lesson 19: Mixed mental challenge · Set 621 · 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. 1.240 ÷ 4 =
2. 2.2 + ? = 10
3. 3.37 × 6 =
4. 4.13² =
5. 5.Best estimate of 33 × 76? (a) 240 (b) 24000 (c) 2400
6. 6.What is the remainder when 98 is divided by 8?
7. 7.87 + 8 =
8. 8.A film starts at 7:05 and ends at 9:10. How many minutes long is the film?
9. 9.26 laddoos are packed in boxes of 5. How many laddoos are left over?
10. 10.You buy a box of crayons for ₹65 and pay with a ₹100 note. How much change do you get, in rupees?
11. 11.37 + 44 =
12. 12.59 − 37 =
13. 13.18² =
14. 14.You buy a cricket ball for ₹227 and pay with a ₹500 note. How much change do you get, in rupees?
15. 15.51 × 4 =
16. 16.518 ÷ 7 =
17. 17.81 − 18 =
18. 18.54 × 9 =
19. 19.17 + 18 =
20. 20.4 + ? = 10
21. 21.96 − 13 =
22. 22.Half of 136 =
23. 23.64 − 44 =
24. 24.Double 62 =
25. 25.50% of ₹830 =
26. 26.88 ÷ 4 =
27. 27.63 − 24 =
28. 28.86 + 18 =
29. 29.117 − 87 =
30. 30.80 + 21 =
31. 31.19 + 18 =
32. 32.A cricket match starts at 5:45 and the first innings ends at 6:40. How many minutes did the innings last?
33. 33.Double 21 =
34. 34.Double 93 =
35. 35.15² =
36. 36.296 ÷ 8 =
37. 37.91 − 29 =
38. 38.46 × 3 =
39. 39.15 × 9 =
40. 40.A film starts at 8:30 and ends at 10:05. How many minutes long is the film?

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