Mental Maths Questions Worksheet for Class 5

Mental maths lesson 19: Mixed mental challenge · Set 983 · 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. 1.15² =
2. 2.7 + 7 =
3. 3.68 − 17 =
4. 4.A cricket match starts at 2:15 and the first innings ends at 5:15. How many minutes did the innings last?
5. 5.21 + ? = 100
6. 6.14 + 29 =
7. 7.1 + ? = 10
8. 8.12 × 4 =
9. 9.You buy a pencil box for ₹21 and pay with a ₹100 note. How much change do you get, in rupees?
10. 10.77 − 65 =
11. 11.328 ÷ 8 =
12. 12.144 ÷ 8 =
13. 13.A film starts at 3:20 and ends at 5:05. How many minutes long is the film?
14. 14.25% of ₹220 =
15. 15.You buy a notebook for ₹36 and a pen for ₹20. You pay with a ₹100 note. How much change do you get, in rupees?
16. 16.64 − 43 =
17. 17.Half of 32 =
18. 18.37 + 54 =
19. 19.10% of ₹540 =
20. 20.33 + 19 =
21. 21.50% of ₹140 =
22. 22.56 + 31 =
23. 23.You buy a storybook for ₹38 and a pen for ₹32. You pay with a ₹100 note. How much change do you get, in rupees?
24. 24.27² =
25. 25.Half of 176 =
26. 26.7 + 9 =
27. 27.Half of 44 =
28. 28.31 + ? = 100
29. 29.68 − 52 =
30. 30.You start your homework at 2:55 and finish at 3:40. How many minutes did you work?
31. 31.58 + 8 =
32. 32.70 × 4 =
33. 33.58 + 9 =
34. 34.106 − 60 =
35. 35.104 − 89 =
36. 36.57 × 5 =
37. 37.You start your homework at 7:30 and finish at 10:45. How many minutes did you work?
38. 38.Double 65 =
39. 39.50% of ₹600 =
40. 40.You buy a cricket ball for ₹56 and pay with a ₹100 note. How much change do you get, in rupees?

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